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__NOTOC__ {{Planetmath instructions|topic=51-XX Geometry}} ==51-00 General reference works (handbooks, dictionaries, bibliographies, etc.)== * PM: [http://planetmath.org/?op=getobj&from=objects&id=3031 alternate proof of parallelogram law], id=3031 -- WP: none -- Status: '''N''' ::[[User:Paul August|Paul August]] [[User_talk:Paul August|☎]] 03:59, 6 May 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=3623 angle bisector], id=3623 -- WP: [[bisector]] -- Status: '''M''' ::[[User:Jeekc|Jeekc]] 15:26, 7 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=3170 angle sum identity], id=3170 -- WP guess: [[angle sum identity]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2535 annulus], id=2535 -- WP: [[annulus]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 15:36, 7 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=146 Apollonius theorem], id=146 -- WP: [[Apollonius theorem]] -- Status: '''C''' :: [[User:Oleg Alexandrov|Oleg Alexandrov]] ([[User talk:Oleg Alexandrov|talk]]) 00:48, 2 April 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=154 Apollonius' circle], id=154 -- WP guess: [[Apollonius' circle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=153 Brahmagupta's formula], id=153 -- WP: [[Brahmagupta's formula]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 15:31, 7 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5434 Brianchon theorem], id=5434 -- WP: [[Brianchon theorem]] -- Status: '''A''' ::[[User:AdamSmithee|AdamSmithee]] 09:37, 4 September 2007 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5483 Brocard theorem], id=5483 -- WP guess: [[Brocard theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3612 butterfly theorem], id=3612 -- WP: [[butterfly theorem]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 14:20, 8 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5468 Carnot circles], id=5468 -- WP guess: [[Carnot circles]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=647 centroid], id=647 -- WP: [[centroid]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 15:39, 7 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=3586 chord], id=3586 -- WP: [[chord (geometry)]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 09:42, 8 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=4236 circle], id=4236 -- WP guess: [[circle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2281 collinear], id=2281 -- WP: [[collinear]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 09:42, 8 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5469 complete quadrilateral], id=5469 -- WP guess: [[complete quadrilateral]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2286 concurrent], id=2286 -- WP: [[concurrency]] -- Status: '''A''' ::[[User:Paul August|Paul August]] [[User_talk:Paul August|☎]] 04:12, 6 May 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=27 cosines law], id=27 -- WP: [[law of cosines]] -- Status: '''A''' :: [[User:Oleg Alexandrov|Oleg Alexandrov]] 02:49, 11 Feb 2005 (UTC) (on behalf of [[User:Tokek|Tokek]]) * PM: [http://planetmath.org/?op=getobj&from=objects&id=150 cyclic quadrilateral], id=150 -- WP: [[cyclic quadrilateral]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=713 derivation of cosines law], id=713 -- WP guess: [[derivation of cosines law]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=1991 diameter], id=1991 -- WP: [[diameter]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 17:15, 27 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1623 double angle identity], id=1623 -- WP guess: [[double angle identity]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=143 equilateral triangle], id=143 -- WP guess: [[equilateral triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3814 Erdős-Anning Theorem], id=3814 -- WP guess: [[Erdös-Anning Theorem|Erdős-Anning Theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=155 Euler Line], id=155 -- WP: [[Euler Line]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=3407 fundamental theorem on isogonal lines], id=3407 -- WP guess: [[fundamental theorem on isogonal lines]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=1444 Gergonne point], id=1444 -- WP: [[Gergonne point]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1452 Gergonne triangle], id=1452 -- WP: [[Gergonne triangle]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=645 height], id=645 -- WP: [[Altitude (triangle)]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=140 Heron's formula], id=140 -- WP: [[Heron's formula]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 10:59, 8 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1441 hexagon], id=1441 -- WP: [[hexagon]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1096 hypotenuse], id=1096 -- WP: [[hypotenuse]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=3406 isogonal conjugate], id=3406 -- WP: [[isogonal conjugate]] -- Status: '''NM''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=149 isosceles triangle], id=149 -- WP: [[isosceles triangle]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 15:43, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1205 legs], id=1205 -- WP guess: [[Leg (geometry)]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 15:43, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1449 Lemoine circle], id=1449 -- WP guess: [[Lemoine circle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=1448 Lemoine point], id=1448 -- WP: [[Lemoine point]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5704 magic circles], id=5704 -- WP guess: [[magic circles]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3640 medial triangle], id=3640 -- WP guess: [[medial triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=142 median], id=142 -- WP: [[Median (geometry)]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=627 midpoint], id=627 -- WP: [[midpoint]] -- Status: '''NM''' ::[[User:Jeekc|Jeekc]] 05:55, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5470 Miquel point], id=5470 -- WP guess: [[Miquel point]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3160 Mollweide's equations], id=3160 -- WP guess: [[Mollweide's equations]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=141 Morley's theorem], id=141 -- WP guess: [[Morley's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5471 Newton's line], id=5471 -- WP guess: [[Newton's line]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5480 Newton-Gauss line], id=5480 -- WP guess: [[Newton-Gauss line]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3641 nine-point circle], id=3641 -- WP: [[nine-point circle]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 04:19, 14 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1447 orthic triangle], id=1447 -- WP guess: [[orthic triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=646 orthocenter], id=646 -- WP guess: [[orthocenter]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=1081 parallelogram], id=1081 -- WP: [[parallelogram]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 10:15, 8 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1082 parallelogram law], id=1082 -- WP: [[parallelogram law]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 10:15, 8 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1442 Pascal's mystic hexagram], id=1442 -- WP guess: [[Pascal's mystic hexagram]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3579 pedal triangle], id=3579 -- WP: [[pedal triangle]] -- Status: '''A''' :: [[User:Oleg Alexandrov|Oleg Alexandrov]] ([[User talk:Oleg Alexandrov|talk]]) 07:56, 3 December 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1397 pentagon], id=1397 -- WP: [[pentagon]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 15:43, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1384 polygon], id=1384 -- WP guess: [[polygon]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2968 proof of Apollonius theorem], id=2968 -- WP guess: [[proof of Apollonius theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2967 proof of Apollonius theorem], id=2967 -- WP guess: [[proof of Apollonius theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3594 proof of Brahmagupta's formula], id=3594 -- WP: [[Brahmagupta's formula]] -- Status: '''C''' ::[[User:Jeekc|Jeekc]] 10:54, 8 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=3613 proof of butterfly theorem], id=3613 -- WP guess: [[proof of butterfly theorem]] -- Status: '''N''' ::Linked to [[Butterfly theorem]]. [[User:Jeekc|Jeekc]] 14:37, 8 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=3168 proof of double angle identity], id=3168 -- WP guess: [[proof of double angle identity]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3828 proof of Erdős-Anning Theorem], id=3828 -- WP guess: [[proof of Erdös-Anning Theorem|proof of Erdős-Anning Theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2974 proof of Heron's formula], id=2974 -- WP: [[Heron's formula]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 10:59, 8 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=3161 proof of Mollweide's equations], id=3161 -- WP guess: [[proof of Mollweide's equations]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2971 proof of parallelogram law], id=2971 -- WP guess: [[proof of parallelogram law]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3079 proof of Ptolemy's inequality], id=3079 -- WP guess: [[proof of Ptolemy's inequality]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2906 proof of Ptolemy's theorem], id=2906 -- WP guess: [[proof of Ptolemy's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=696 proof of Pythagorean theorem], id=696 -- WP guess: [[proof of Pythagorean theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3130 proof of Pythagorean theorem], id=3130 -- WP guess: [[proof of Pythagorean theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3578 proof of Simson's line], id=3578 -- WP guess: [[proof of Simson's line]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2908 proof of Stewart's theorem], id=2908 -- WP guess: [[proof of Stewart's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3632 proof of tangents law], id=3632 -- WP guess: [[proof of tangents law]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3064 proof of Thales' theorem], id=3064 -- WP guess: [[proof of Thales' theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=100 Ptolemy's theorem], id=100 -- WP guess: [[Ptolemy's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=98 Pythagorean theorem], id=98 -- WP: [[Pythagorean theorem]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 15:43, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1072 quadrilateral], id=1072 -- WP: [[quadrilateral]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 17:15, 27 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=2006 radius], id=2006 -- WP: [[radius]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 17:15, 27 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1084 rectangle], id=1084 -- WP: [[rectangle]] -- Status: '''NM''' ::[[User:Jeekc|Jeekc]] 17:15, 27 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=2256 regular polygon], id=2256 -- WP guess: [[regular polygon]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2254 regular polyhedron], id=2254 -- WP: [[Platonic solid]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 17:15, 27 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=1088 rhombus], id=1088 -- WP: [[rhombus]] -- Status: '''M''' ::[[User:Jeekc|Jeekc]] 17:15, 27 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=650 right triangle], id=650 -- WP: [[right triangle]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 17:15, 27 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5482 Schooten theorem], id=5482 -- WP guess: [[Schooten theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3617 sector of a circle], id=3617 -- WP guess: [[sector of a circle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2277 Simson's line], id=2277 -- WP: [[Simson's line]] -- Status: '''NM''' : The part about the envelope of Simpson's line might need merging. [[User:Oleg Alexandrov|Oleg Alexandrov]] ([[User talk:Oleg Alexandrov|talk]]) 07:56, 3 December 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=28 sines law], id=28 -- WP: [[law of sines]] -- '''Status: '''A''' :: [[User:Tokek|Tokek]] 02:49, 11 Feb 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=757 sines law proof], id=757 -- WP guess: [[sines law proof]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=763 sines law proof], id=763 -- WP guess: [[sines law proof]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5422 some proofs for triangle theorems], id=5422 -- WP guess: [[some proofs for triangle theorems]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=1086 square], id=1086 -- WP guess: [[square]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=145 Stewart's theorem], id=145 -- WP guess: [[Stewart's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3631 tangents law], id=3631 -- WP guess: [[tangents law]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3063 Thales' theorem], id=3063 -- WP guess: [[Thales' theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=139 triangle], id=139 -- WP: [[triangle]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 15:43, 9 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=655 triangle center], id=655 -- WP guess: [[triangle center]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6714 circumcircle], id=6714 -- WP guess: [[circumcircle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7201 determining when a point is inside a polygon], id=7201 -- WP guess: [[determining when a point is inside a polygon]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4669 non-Euclidean geometry], id=4669 -- WP guess: [[non-Euclidean geometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6797 origin], id=6797 -- WP: [[origin (mathematics)]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7199 when is a point inside a triangle], id=7199 -- WP guess: [[when is a point inside a triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9784 n-section of line segment with compass and straightedge], id=9784<sup><span style="color:red;">new!</span></sup> -- WP guess: [[n-section of line segment with compass and straightedge]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9493 adjacent], id=9493<sup><span style="color:red;">new!</span></sup> -- WP guess: [[adjacent]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9539 alternative proof of necessity direction of equivalent conditions for triangles (hyperbolic and spherical)], id=9539<sup><span style="color:red;">new!</span></sup> -- WP guess: [[alternative proof of necessity direction of equivalent conditions for triangles (hyperbolic and spherical)]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9521 angles of an isosceles triangle], id=9521<sup><span style="color:red;">new!</span></sup> -- WP guess: [[angles of an isosceles triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9704 Archimedes' cylinders in cube], id=9704<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Archimedes' cylinders in cube]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9230 area], id=9230<sup><span style="color:red;">new!</span></sup> -- WP guess: [[area]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9501 area of regular polygon], id=9501<sup><span style="color:red;">new!</span></sup> -- WP guess: [[area of regular polygon]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9409 Beltrami-Klein model], id=9409<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Beltrami-Klein model]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9400 biangle], id=9400<sup><span style="color:red;">new!</span></sup> -- WP guess: [[biangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8688 bound on area of right triangle], id=8688<sup><span style="color:red;">new!</span></sup> -- WP guess: [[bound on area of right triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9563 circle with given center and given radius], id=9563<sup><span style="color:red;">new!</span></sup> -- WP guess: [[circle with given center and given radius]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9632 cissoid of Diocles], id=9632<sup><span style="color:red;">new!</span></sup> -- WP guess: [[cissoid of Diocles]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7885 classification of Platonic solids], id=7885<sup><span style="color:red;">new!</span></sup> -- WP guess: [[classification of Platonic solids]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9543 comparison of common geometries], id=9543<sup><span style="color:red;">new!</span></sup> -- WP guess: [[comparison of common geometries]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9502 compass and straightedge construction of angle bisector], id=9502<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of angle bisector]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9556 compass and straightedge construction of center of given circle], id=9556<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of center of given circle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9548 compass and straightedge construction of duplicating an angle], id=9548<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of duplicating an angle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9581 compass and straightedge construction of geometric mean], id=9581<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of geometric mean]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9506 compass and straightedge construction of parallel line], id=9506<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of parallel line]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9562 compass and straightedge construction of perpendicular], id=9562<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of perpendicular]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9503 compass and straightedge construction of regular pentagon], id=9503<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of regular pentagon]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9670 compass and straightedge construction of regular triangle], id=9670<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of regular triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9671 compass and straightedge construction of square], id=9671<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of square]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8204 concyclic], id=8204<sup><span style="color:red;">new!</span></sup> -- WP guess: [[concyclic]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9555 construct the center of a given circle], id=9555<sup><span style="color:red;">new!</span></sup> -- WP guess: [[construct the center of a given circle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9677 construction of regular 2n-gon from regular n-gon], id=9677<sup><span style="color:red;">new!</span></sup> -- WP guess: [[construction of regular 2n-gon from regular n-gon]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9526 converse of isosceles triangle theorem], id=9526<sup><span style="color:red;">new!</span></sup> -- WP guess: [[converse of isosceles triangle theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9431 converting between the Beltrami-Klein model and the Poincaré disc model], id=9431<sup><span style="color:red;">new!</span></sup> -- WP guess: [[converting between the Beltrami-Klein model and the Poincaré disc model]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9432 converting between the Poincaré disc model and the upper half plane model], id=9432<sup><span style="color:red;">new!</span></sup> -- WP guess: [[converting between the Poincaré disc model and the upper half plane model]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9865 coordinate way], id=9865<sup><span style="color:red;">new!</span></sup> -- WP guess: [[coordinate way]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9522 CPCTC], id=9522<sup><span style="color:red;">new!</span></sup> -- WP guess: [[CPCTC]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9511 crossed quadrilateral], id=9511<sup><span style="color:red;">new!</span></sup> -- WP guess: [[crossed quadrilateral]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8150 defect], id=8150<sup><span style="color:red;">new!</span></sup> -- WP guess: [[defect]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9528 determining from angles that a triangle is isosceles], id=9528<sup><span style="color:red;">new!</span></sup> -- WP guess: [[determining from angles that a triangle is isosceles]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9558 differential geometry], id=9558<sup><span style="color:red;">new!</span></sup> -- WP guess: [[differential geometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9535 equiangular polygon], id=9535<sup><span style="color:red;">new!</span></sup> -- WP guess: [[equiangular polygon]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9537 equiangular triangle], id=9537<sup><span style="color:red;">new!</span></sup> -- WP guess: [[equiangular triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9534 equilateral polygon], id=9534<sup><span style="color:red;">new!</span></sup> -- WP guess: [[equilateral polygon]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9536 equivalent conditions for triangles], id=9536<sup><span style="color:red;">new!</span></sup> -- WP guess: [[equivalent conditions for triangles]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9470 Garfield's proof of Pythagorean theorem], id=9470<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Garfield's proof of Pythagorean theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9561 generalized Pythagorean theorem], id=9561<sup><span style="color:red;">new!</span></sup> -- WP guess: [[generalized Pythagorean theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9531 geometric constructions by Euclid], id=9531<sup><span style="color:red;">new!</span></sup> -- WP guess: [[geometric constructions by Euclid]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8164 great circle], id=8164<sup><span style="color:red;">new!</span></sup> -- WP guess: [[great circle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9427 hyperbola], id=9427<sup><span style="color:red;">new!</span></sup> -- WP guess: [[hyperbola]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9782 hyperbolic rotation], id=9782<sup><span style="color:red;">new!</span></sup> -- WP guess: [[hyperbolic rotation]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9447 ideal triangle], id=9447<sup><span style="color:red;">new!</span></sup> -- WP guess: [[ideal triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9505 index of entries on compass and straightedge constructions], id=9505<sup><span style="color:red;">new!</span></sup> -- WP guess: [[index of entries on compass and straightedge constructions]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9519 isosceles trapezoid], id=9519<sup><span style="color:red;">new!</span></sup> -- WP guess: [[isosceles trapezoid]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9523 isosceles triangle theorem], id=9523<sup><span style="color:red;">new!</span></sup> -- WP guess: [[isosceles triangle theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7789 kite], id=7789<sup><span style="color:red;">new!</span></sup> -- WP guess: [[kite]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9440 Lambert quadrilateral], id=9440<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Lambert quadrilateral]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8709 length], id=8709<sup><span style="color:red;">new!</span></sup> -- WP guess: [[length]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8012 opposite], id=8012<sup><span style="color:red;">new!</span></sup> -- WP guess: [[opposite]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9411 parallel lines in hyperbolic geometry], id=9411<sup><span style="color:red;">new!</span></sup> -- WP guess: [[parallel lines in hyperbolic geometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9244 perimeter of ellipse], id=9244<sup><span style="color:red;">new!</span></sup> -- WP guess: [[perimeter of ellipse]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8856 PlanetMath graphics sandbox], id=8856<sup><span style="color:red;">new!</span></sup> -- WP guess: [[PlanetMath graphics sandbox]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9416 Poincaré disc model], id=9416<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Poincaré disc model]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9418 Poincaré upper half plane model], id=9418<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Poincaré upper half plane model]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9516 primitive], id=9516<sup><span style="color:red;">new!</span></sup> -- WP guess: [[primitive]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9520 prismatoid], id=9520<sup><span style="color:red;">new!</span></sup> -- WP guess: [[prismatoid]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9471 proof of Pythagorean theorem], id=9471<sup><span style="color:red;">new!</span></sup> -- WP guess: [[proof of Pythagorean theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9626 regular polygon and circles], id=9626<sup><span style="color:red;">new!</span></sup> -- WP guess: [[regular polygon and circles]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9538 regular triangle], id=9538<sup><span style="color:red;">new!</span></sup> -- WP guess: [[regular triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9532 rhomboid], id=9532<sup><span style="color:red;">new!</span></sup> -- WP guess: [[rhomboid]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9518 right trapezoid], id=9518<sup><span style="color:red;">new!</span></sup> -- WP guess: [[right trapezoid]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9445 Saccheri quadrilateral], id=9445<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Saccheri quadrilateral]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8151 scalene triangle], id=8151<sup><span style="color:red;">new!</span></sup> -- WP guess: [[scalene triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9245 semiperimeter], id=9245<sup><span style="color:red;">new!</span></sup> -- WP guess: [[semiperimeter]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9455 similarity in geometry], id=9455<sup><span style="color:red;">new!</span></sup> -- WP guess: [[similarity in geometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9517 trapezoid], id=9517<sup><span style="color:red;">new!</span></sup> -- WP guess: [[trapezoid]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7684 triangle solving], id=7684<sup><span style="color:red;">new!</span></sup> -- WP guess: [[triangle solving]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7741 unit disc], id=7741<sup><span style="color:red;">new!</span></sup> -- WP guess: [[unit disc]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9540 volume], id=9540<sup><span style="color:red;">new!</span></sup> -- WP guess: [[volume]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9702 volume as integral], id=9702<sup><span style="color:red;">new!</span></sup> -- WP guess: [[volume as integral]] -- Status: ==51-01 Instructional exposition (textbooks, tutorial papers, etc.)== * PM: [http://planetmath.org/?op=getobj&from=objects&id=3824 geometry], id=3824 -- WP guess: [[geometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7105 \operatorname{arc tan} with two arguments], id=7105 -- WP guess: [[\operatornamearc tan with two arguments]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6968 construction of polar coordinates], id=6968 -- WP guess: [[construction of polar coordinates]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6977 coordinate systems], id=6977 -- WP guess: [[coordinate systems]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6962 Euclidean geometry of the plane], id=6962 -- WP guess: [[Euclidean geometry of the plane]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6963 polar coordinates], id=6963 -- WP guess: [[polar coordinates]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7076 polar curve], id=7076 -- WP guess: [[polar curve]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8011 adjacent], id=8011<sup><span style="color:red;">new!</span></sup> -- WP guess: [[adjacent]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8168 calculator trigonometric functions], id=8168<sup><span style="color:red;">new!</span></sup> -- WP guess: [[calculator trigonometric functions]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9588 corresponding angles in transversal cutting], id=9588<sup><span style="color:red;">new!</span></sup> -- WP guess: [[corresponding angles in transversal cutting]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8166 determining signs of trigonometric functions], id=8166<sup><span style="color:red;">new!</span></sup> -- WP guess: [[determining signs of trigonometric functions]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9672 Euclidean axiom by Hilbert], id=9672<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Euclidean axiom by Hilbert]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9362 illustration of why SSA may not prove congruence], id=9362<sup><span style="color:red;">new!</span></sup> -- WP guess: [[illustration of why SSA may not prove congruence]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9533 parallellism in Euclidean plane], id=9533<sup><span style="color:red;">new!</span></sup> -- WP guess: [[parallellism in Euclidean plane]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9598 parallelogram theorems], id=9598<sup><span style="color:red;">new!</span></sup> -- WP guess: [[parallelogram theorems]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9601 proof of parallelogram theorems], id=9601<sup><span style="color:red;">new!</span></sup> -- WP guess: [[proof of parallelogram theorems]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8010 sohcahtoa], id=8010<sup><span style="color:red;">new!</span></sup> -- WP guess: [[sohcahtoa]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8167 terminal ray], id=8167<sup><span style="color:red;">new!</span></sup> -- WP guess: [[terminal ray]] -- Status: ==51-03 Historical (must also be assigned at least one classification number from Section 01)== ==51A05 General theory and projective geometries== * PM: [http://planetmath.org/?op=getobj&from=objects&id=6485 bisectors theorem], id=6485 -- WP: [[Angle bisector theorem]] -- Status: '''NM''' ::[[User:Jeekc|Jeekc]] 17:32, 27 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=745 Ceva's theorem], id=745 -- WP guess: [[Ceva's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5861 Generalizations of Ceva theorem], id=5861 -- WP guess: [[Generalizations of Ceva theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5425 Hesse configuration], id=5425 -- WP guess: [[Hesse configuration]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3083 Menelaus' theorem], id=3083 -- WP: [[Menelaus' theorem]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 17:32, 27 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=2328 Pappus's theorem], id=2328 -- WP: [[Pappus's hexagon theorem]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 17:32, 27 November 2005 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=6487 proof of bisectors theorem], id=6487 -- WP guess: [[proof of bisectors theorem]] -- Status: '''N''' ::Linked to the corresponding page. [[User:Jeekc|Jeekc]] 14:26, 8 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=6488 proof of bisectors theorem], id=6488 -- WP guess: [[proof of bisectors theorem]] -- Status: '''N''' ::Linked to the corresponding page. [[User:Jeekc|Jeekc]] 14:26, 8 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=2914 proof of Ceva's theorem], id=2914 -- WP guess: [[proof of Ceva's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3092 proof of Menelaus' theorem], id=3092 -- WP guess: [[proof of Menelaus' theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4509 proof of Pappus's theorem], id=4509 -- WP guess: [[proof of Pappus's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4627 proof of Pascal's mystic hexagram], id=4627 -- WP guess: [[proof of Pascal's mystic hexagram]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6484 proof of trigonometric version of Ceva's theorem], id=6484 -- WP guess: [[proof of trigonometric version of Ceva's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6483 trigonometric version of Ceva's theorem], id=6483 -- WP guess: [[trigonometric version of Ceva's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9596 (partial) linear space], id=9596<sup><span style="color:red;">new!</span></sup> -- WP guess: [[(partial) linear space]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8105 central collineations], id=8105<sup><span style="color:red;">new!</span></sup> -- WP guess: [[central collineations]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9591 circle has one center], id=9591<sup><span style="color:red;">new!</span></sup> -- WP guess: [[circle has one center]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9597 cotriangular space], id=9597<sup><span style="color:red;">new!</span></sup> -- WP guess: [[cotriangular space]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7838 fundamental theorem of projective geometry], id=7838<sup><span style="color:red;">new!</span></sup> -- WP guess: [[fundamental theorem of projective geometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8082 perspectivity], id=8082<sup><span style="color:red;">new!</span></sup> -- WP guess: [[perspectivity]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7986 polarities and forms], id=7986<sup><span style="color:red;">new!</span></sup> -- WP guess: [[polarities and forms]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7981 polarity], id=7981<sup><span style="color:red;">new!</span></sup> -- WP guess: [[polarity]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7843 projective geometry], id=7843<sup><span style="color:red;">new!</span></sup> -- WP guess: [[projective geometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7982 projectivity], id=7982<sup><span style="color:red;">new!</span></sup> -- WP guess: [[projectivity]] -- Status: ==51A10 Homomorphism, automorphism and dualities== ==51A15 Structures with parallelism== * PM: [http://planetmath.org/?op=getobj&from=objects&id=8033 affine combination], id=8033<sup><span style="color:red;">new!</span></sup> -- WP guess: [[affine combination]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7988 affine geometry], id=7988<sup><span style="color:red;">new!</span></sup> -- WP guess: [[affine geometry]] -- Status: ==51A20 Configuration theorems== ==51A30 Desarguesian and Pappian geometries== * PM: [http://planetmath.org/?op=getobj&from=objects&id=424 Desargues' theorem], id=424 -- WP: [[Desargues' theorem]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 14:31, 8 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=4514 proof of Desargues' theorem], id=4514 -- WP guess: [[proof of Desargues' theorem]] -- Status: '''N''' ::Linked to [[Desargues' theorem]]'s page. [[User:Jeekc|Jeekc]] 14:31, 8 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5860 Two generalizations of Desargues Theorem], id=5860 -- WP guess: [[Two generalizations of Desargues Theorem]] -- Status: ==51A35 Non-Desarguesian affine and projective planes== ==51A45 Incidence structures imbeddable into projective geometries== ==51A99 Miscellaneous== * PM: [http://planetmath.org/?op=getobj&from=objects&id=7182 pencil], id=7182 -- WP guess: [[pencil]] -- Status: ==51Axx Linear incidence geometry== ==51D20 Combinatorial geometries== * PM: [http://planetmath.org/?op=getobj&from=objects&id=8553 Bertrand's problem], id=8553<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Bertrand's problem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8587 circle line picking], id=8587<sup><span style="color:red;">new!</span></sup> -- WP guess: [[circle line picking]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8557 circumscribe], id=8557<sup><span style="color:red;">new!</span></sup> -- WP guess: [[circumscribe]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8383 happy ending problem], id=8383<sup><span style="color:red;">new!</span></sup> -- WP guess: [[happy ending problem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8558 inscribe], id=8558<sup><span style="color:red;">new!</span></sup> -- WP guess: [[inscribe]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8394 lazy caterer's sequence], id=8394<sup><span style="color:red;">new!</span></sup> -- WP guess: [[lazy caterer's sequence]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8455 Motzkin number], id=8455<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Motzkin number]] -- Status: ==51Dxx Geometric closure systems== ==51E05 General block designs== ==51E15 Affine and projective planes== * PM: [http://planetmath.org/?op=getobj&from=objects&id=5005 projective line], id=5005 -- WP guess: [[projective line]] -- Status: ==51E20 Combinatorial structures in finite projective spaces== ==51E30 Other finite incidence structures== ==51E99 Miscellaneous== * PM: [http://planetmath.org/?op=getobj&from=objects&id=5941 dodecagon], id=5941 -- WP: [[dodecagon]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 11:04, 4 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5947 dodecahedron], id=5947 -- WP: [[dodecahedron]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 11:04, 4 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5939 enneacontahedron], id=5939 -- WP guess: [[enneacontahedron]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5953 heptahedron], id=5953 -- WP guess: [[heptahedron]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5954 hexahedron], id=5954 -- WP: [[hexahedron]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 11:04, 4 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5940 hexecontahedron], id=5940 -- WP guess: [[hexecontahedron]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5945 icosahedron], id=5945 -- WP: [[icosahedron]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 11:04, 4 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5942 icosidodecahedron], id=5942 -- WP: [[icosidodecahedron]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 11:04, 4 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5944 icositetrahedron], id=5944 -- WP guess: [[icositetrahedron]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5951 nonahedron], id=5951 -- WP guess: [[nonahedron]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5952 octahedron], id=5952 -- WP: [[octahedron]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 11:04, 4 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5955 pentahedron], id=5955 -- WP: [[pentahedron]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 11:04, 4 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5946 tetradecahedron], id=5946 -- WP guess: [[tetradecahedron]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5956 tetrahedron], id=5956 -- WP: [[tetrahedron]] -- Status: '''NM''' ::Need to add the mensuration part. [[User:Jeekc|Jeekc]] 11:04, 4 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5943 triacontahedron], id=5943 -- WP: [[triacontahedron]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 11:04, 4 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5949 undecagon], id=5949 -- WP: [[undecagon]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 11:04, 4 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=5948 undecahedron], id=5948 -- WP guess: [[undecahedron]] -- Status: ==51Exx Finite geometry and special incidence structures== ==51F05 Absolute planes== * PM: [http://planetmath.org/?op=getobj&from=objects&id=7467 neutral geometry], id=7467 -- WP guess: [[neutral geometry]] -- Status: ==51F10 Absolute spaces== ==51F20 Congruence and orthogonality== * PM: [http://planetmath.org/?op=getobj&from=objects&id=7426 congruence axioms], id=7426 -- WP guess: [[congruence axioms]] -- Status: ==51F99 Miscellaneous== * PM: [http://planetmath.org/?op=getobj&from=objects&id=3837 Weizenbock's Inequality], id=3837 -- WP guess: [[Weizenbock's Inequality]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6644 directed segment], id=6644 -- WP guess: [[directed segment]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9606 compass and straightedge construction of similar triangles], id=9606<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of similar triangles]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9456 pentagram], id=9456<sup><span style="color:red;">new!</span></sup> -- WP guess: [[pentagram]] -- Status: ==51Fxx Metric geometry== ==51G05 Ordered geometries (ordered incidence structures, etc.)== * PM: [http://planetmath.org/?op=getobj&from=objects&id=7440 angle], id=7440 -- WP guess: [[angle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7449 betweenness in rays], id=7449 -- WP guess: [[betweenness in rays]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7326 ordered geometry], id=7326 -- WP guess: [[ordered geometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7429 Pasch's Theorem], id=7429 -- WP guess: [[Pasch's Theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7331 ray], id=7331 -- WP guess: [[ray]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9637 a line segment has at most one midpoint], id=9637<sup><span style="color:red;">new!</span></sup> -- WP guess: [[a line segment has at most one midpoint]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9661 betweenness relation], id=9661<sup><span style="color:red;">new!</span></sup> -- WP guess: [[betweenness relation]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9649 complementary angles], id=9649<sup><span style="color:red;">new!</span></sup> -- WP guess: [[complementary angles]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9678 linear ordered geometry], id=9678<sup><span style="color:red;">new!</span></sup> -- WP guess: [[linear ordered geometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9625 proof of uniqueness of center of a circle], id=9625<sup><span style="color:red;">new!</span></sup> -- WP guess: [[proof of uniqueness of center of a circle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9666 some theorems on strict betweenness relations], id=9666<sup><span style="color:red;">new!</span></sup> -- WP guess: [[some theorems on strict betweenness relations]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9662 some theorems on the axioms of order], id=9662<sup><span style="color:red;">new!</span></sup> -- WP guess: [[some theorems on the axioms of order]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9665 strict betweenness relation], id=9665<sup><span style="color:red;">new!</span></sup> -- WP guess: [[strict betweenness relation]] -- Status: ==51H05 General theory== * PM: [http://planetmath.org/?op=getobj&from=objects&id=3274 torus], id=3274 -- WP guess: [[torus]] -- Status: ==51Hxx Topological geometry== ==51K99 Miscellaneous== * PM: [http://planetmath.org/?op=getobj&from=objects&id=9547 compass and straightedge construction of inverse point], id=9547<sup><span style="color:red;">new!</span></sup> -- WP guess: [[compass and straightedge construction of inverse point]] -- Status: ==51Kxx Distance geometry== ==51M04 Elementary problems in Euclidean geometries== * PM: [http://planetmath.org/?op=getobj&from=objects&id=5841 area of a spherical triangle], id=5841 -- WP guess: [[area of a spherical triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6456 convex angle], id=6456 -- WP guess: [[convex angle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4479 corollary of Morley's theorem], id=4479 -- WP guess: [[corollary of Morley's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4538 Napoleon's theorem], id=4538 -- WP guess: [[Napoleon's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=1383 pivot theorem], id=1383 -- WP guess: [[pivot theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4465 proof of Morley's theorem], id=4465 -- WP guess: [[proof of Morley's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3674 proof of pivot theorem], id=3674 -- WP guess: [[proof of pivot theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6476 radian], id=6476 -- WP guess: [[radian]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4770 Sylvester's theorem], id=4770 -- WP guess: [[Sylvester's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7357 cone in \mathbb{R}^3], id=7357 -- WP guess: [[cone in \mathbbR^3]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7345 cylinder], id=7345 -- WP guess: [[cylinder]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7348 developable surface], id=7348 -- WP guess: [[developable surface]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7347 ruled surface], id=7347 -- WP guess: [[ruled surface]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9219 antiprism], id=9219<sup><span style="color:red;">new!</span></sup> -- WP guess: [[antiprism]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9551 circumferential angle is half the corresponding central angle], id=9551<sup><span style="color:red;">new!</span></sup> -- WP guess: [[circumferential angle is half the corresponding central angle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8422 Dehn's theorem], id=8422<sup><span style="color:red;">new!</span></sup> -- WP guess: [[Dehn's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9552 opposing angles in a cyclic quadrilateral are supplementary], id=9552<sup><span style="color:red;">new!</span></sup> -- WP guess: [[opposing angles in a cyclic quadrilateral are supplementary]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8423 proof of Dehn's theorem], id=8423<sup><span style="color:red;">new!</span></sup> -- WP guess: [[proof of Dehn's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9443 spherical trigonometry], id=9443<sup><span style="color:red;">new!</span></sup> -- WP guess: [[spherical trigonometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9627 surface of revolution], id=9627<sup><span style="color:red;">new!</span></sup> -- WP guess: [[surface of revolution]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9549 theorems of Euclid], id=9549<sup><span style="color:red;">new!</span></sup> -- WP guess: [[theorems of Euclid]] -- Status: ==51M05 Euclidean geometries (general) and generalizations== * PM: [http://planetmath.org/?op=getobj&from=objects&id=4495 area of the n-sphere], id=4495 -- WP guess: [[area of the n-sphere]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6637 ellipsoid], id=6637 -- WP guess: [[ellipsoid]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4490 homology of the sphere], id=4490 -- WP guess: [[homology of the sphere]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=186 sphere], id=186 -- WP guess: [[sphere]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4491 spherical coordinates], id=4491 -- WP guess: [[spherical coordinates]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6638 spheroid], id=6638 -- WP: [[spheroid]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 14:34, 8 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=4496 volume of the n-sphere], id=4496 -- WP guess: [[volume of the n-sphere]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4668 parallel postulate], id=4668 -- WP guess: [[parallel postulate]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7083 SNCF metric], id=7083 -- WP guess: [[SNCF metric]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9317 cylindrical coordinates], id=9317<sup><span style="color:red;">new!</span></sup> -- WP guess: [[cylindrical coordinates]] -- Status: ==51M10 Hyperbolic and elliptic geometries (general) and generalizations== * PM: [http://planetmath.org/?op=getobj&from=objects&id=5484 Lobachevsky's formula], id=5484 -- WP guess: [[Lobachevsky's formula]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9452 AAA], id=9452<sup><span style="color:red;">new!</span></sup> -- WP guess: [[AAA]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9541 AAS is not valid in spherical geometry], id=9541<sup><span style="color:red;">new!</span></sup> -- WP guess: [[AAS is not valid in spherical geometry]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9408 limiting triangle], id=9408<sup><span style="color:red;">new!</span></sup> -- WP guess: [[limiting triangle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9454 proof of AAA (hyperbolic)], id=9454<sup><span style="color:red;">new!</span></sup> -- WP guess: [[proof of AAA (hyperbolic)]] -- Status: ==51M15 Geometric constructions== * PM: [http://planetmath.org/?op=getobj&from=objects&id=7110 stereographic projection], id=7110 -- WP guess: [[stereographic projection]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8652 perpendicular bisector], id=8652<sup><span style="color:red;">new!</span></sup> -- WP guess: [[perpendicular bisector]] -- Status: ==51M16 Inequalities and extremum problems== * PM: [http://planetmath.org/?op=getobj&from=objects&id=4743 Brunn-Minkowski inequality], id=4743 -- WP guess: [[Brunn-Minkowski inequality]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3061 Hadwiger-Finsler inequality], id=3061 -- WP guess: [[Hadwiger-Finsler inequality]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5397 isoperimetric inequality], id=5397 -- WP guess: [[isoperimetric inequality]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3062 proof of Hadwiger-Finsler inequality], id=3062 -- WP guess: [[proof of Hadwiger-Finsler inequality]] -- Status: ==51M20 Polyhedra and polytopes; regular figures, division of spaces== * PM: [http://planetmath.org/?op=getobj&from=objects&id=1627 polyhedron], id=1627 -- WP guess: [[polyhedron]] -- Status: ==51M25 Length, area and volume== * PM: [http://planetmath.org/?op=getobj&from=objects&id=9290 area of a polygonal region], id=9290<sup><span style="color:red;">new!</span></sup> -- WP guess: [[area of a polygonal region]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9685 solid of revolution], id=9685<sup><span style="color:red;">new!</span></sup> -- WP guess: [[solid of revolution]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9700 volume of ellipsoid], id=9700<sup><span style="color:red;">new!</span></sup> -- WP guess: [[volume of ellipsoid]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9691 volume of solid of revolution], id=9691<sup><span style="color:red;">new!</span></sup> -- WP guess: [[volume of solid of revolution]] -- Status: ==51M99 Miscellaneous== * PM: [http://planetmath.org/?op=getobj&from=objects&id=1446 cevian], id=1446 -- WP guess: [[cevian]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=1467 congruence], id=1467 -- WP guess: [[congruence]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=156 Euler line proof], id=156 -- WP guess: [[Euler line proof]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=1451 incenter], id=1451 -- WP guess: [[incenter]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=1450 incircle], id=1450 -- WP guess: [[incircle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6512 secant line], id=6512 -- WP guess: [[secant line]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2696 SSA], id=2696 -- WP guess: [[SSA]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=1445 symmedian], id=1445 -- WP guess: [[symmedian]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6873 chordal], id=6873 -- WP guess: [[chordal]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6857 limited tangent], id=6857 -- WP guess: [[limited tangent]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6854 power of point], id=6854 -- WP guess: [[power of point]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9529 proof of triangle incenter], id=9529<sup><span style="color:red;">new!</span></sup> -- WP guess: [[proof of triangle incenter]] -- Status: ==51Mxx Real and complex geometry== ==51N05 Descriptive geometry== * PM: [http://planetmath.org/?op=getobj&from=objects&id=3236 piecewise smooth], id=3236 -- WP guess: [[piecewise smooth]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=3235 rectifiable], id=3235 -- WP: [[rectifiable curve]] -- Status: '''A''' ::WP rectifiable should redirect to the more general notion of [[rectifiable set]] [[User:Linas|linas]] 17:08, 26 August 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=7272 Bézier curve], id=7272 -- WP guess: [[Bézier curve]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7146 catenary], id=7146 -- WP guess: [[catenary]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7594 integral representation of length of smooth curve], id=7594 -- WP guess: [[integral representation of length of smooth curve]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7595 straight line is shortest curve between two points], id=7595 -- WP guess: [[straight line is shortest curve between two points]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7109 tractrix], id=7109 -- WP guess: [[tractrix]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7793 arclength as filtered limit], id=7793<sup><span style="color:red;">new!</span></sup> -- WP guess: [[arclength as filtered limit]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9721 B-spline], id=9721<sup><span style="color:red;">new!</span></sup> -- WP guess: [[B-spline]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9436 locus], id=9436<sup><span style="color:red;">new!</span></sup> -- WP guess: [[locus]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9499 NURBS curve], id=9499<sup><span style="color:red;">new!</span></sup> -- WP guess: [[NURBS curve]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9766 NURBS surface], id=9766<sup><span style="color:red;">new!</span></sup> -- WP guess: [[NURBS surface]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9544 parallel curve], id=9544<sup><span style="color:red;">new!</span></sup> -- WP guess: [[parallel curve]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9571 properties of parallel curves], id=9571<sup><span style="color:red;">new!</span></sup> -- WP guess: [[properties of parallel curves]] -- Status: ==51N10 Affine analytic geometry== * PM: [http://planetmath.org/?op=getobj&from=objects&id=8216 barycentric coordinates], id=8216<sup><span style="color:red;">new!</span></sup> -- WP guess: [[barycentric coordinates]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8466 relative interior], id=8466<sup><span style="color:red;">new!</span></sup> -- WP guess: [[relative interior]] -- Status: ==51N15 Projective analytic geometry== ==51N20 Euclidean analytic geometry== * PM: [http://planetmath.org/?op=getobj&from=objects&id=6016 Cartesian coordinates], id=6016 -- WP: [[Cartesian coordinates]] -- Status: '''A''' :: [[User:Tompw|Tompw]] 12:50, 26 March 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=6388 confocal], id=6388 -- WP: [[confocal]] -- Status: '''NM''' :: [[User:Tompw|Tompw]] 12:50, 26 March 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=3584 conic section], id=3584 -- WP: [[conic section]] -- Status: 'NM''' :: [[User:Tompw|Tompw]] 12:50, 26 March 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=6241 conjugate hyperbola], id=6241 -- WP guess: [[conjugate hyperbola]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4520 proof of Steiner's theorem], id=4520 -- WP guess: [[proof of Steiner's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5413 proof of Van Aubel theorem], id=5413 -- WP guess: [[proof of Van Aubel theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=4736 proof of Van Aubel's Theorem], id=4736 -- WP guess: [[proof of Van Aubel's Theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6293 quadrant], id=6293 -- WP guess: [[quadrant]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6457 slope], id=6457 -- WP: [[slope]] -- Status: '''A''' ::[[User:Jeekc|Jeekc]] 04:23, 14 January 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=3887 Steiner's theorem], id=3887 -- WP guess: [[Steiner's theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6008 tangent of conic section], id=6008 -- WP guess: [[tangent of conic section]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=2958 three theorems on parabolas], id=2958 -- WP guess: [[three theorems on parabolas]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5996 unit hyperbola], id=5996 -- WP guess: [[unit hyperbola]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=5412 Van Aubel theorem], id=5412 -- WP guess: [[Van Aubel theorem]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=7248 distance from point to a line], id=7248 -- WP guess: [[distance from point to a line]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=6700 quadratic surfaces], id=6700 -- WP: [[Quadric]] -- Status: :: [[User:Tompw|Tompw]] 12:50, 26 March 2006 (UTC) * PM: [http://planetmath.org/?op=getobj&from=objects&id=7442 proof that the slope of a line is well-defined], id=7442 -- WP guess: [[proof that the slope of a line is well-defined]] -- Status: '''NM''' * PM: [http://planetmath.org/?op=getobj&from=objects&id=6681 tangent plane of quadratic surface], id=6681 -- WP guess: [[tangent plane of quadratic surface]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9485 angle between two lines], id=9485<sup><span style="color:red;">new!</span></sup> -- WP guess: [[angle between two lines]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8457 angle between two planes], id=8457<sup><span style="color:red;">new!</span></sup> -- WP guess: [[angle between two planes]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9492 angle bisector as locus], id=9492<sup><span style="color:red;">new!</span></sup> -- WP guess: [[angle bisector as locus]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9248 area of a quadrilateral], id=9248<sup><span style="color:red;">new!</span></sup> -- WP guess: [[area of a quadrilateral]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=8892 curve of Agnesi], id=8892<sup><span style="color:red;">new!</span></sup> -- WP guess: [[curve of Agnesi]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9484 envelope], id=9484<sup><span style="color:red;">new!</span></sup> -- WP guess: [[envelope]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9866 equation of plane], id=9866<sup><span style="color:red;">new!</span></sup> -- WP guess: [[equation of plane]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9867 line in space], id=9867<sup><span style="color:red;">new!</span></sup> -- WP guess: [[line in space]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9444 parabola], id=9444<sup><span style="color:red;">new!</span></sup> -- WP guess: [[parabola]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9266 proof of area of a quadrilateral], id=9266<sup><span style="color:red;">new!</span></sup> -- WP guess: [[proof of area of a quadrilateral]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9546 slope angle], id=9546<sup><span style="color:red;">new!</span></sup> -- WP guess: [[slope angle]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9472 transition to skew-angled coordinates], id=9472<sup><span style="color:red;">new!</span></sup> -- WP guess: [[transition to skew-angled coordinates]] -- Status: ==51N25 Analytic geometry with other transformation groups== ==51N99 Miscellaneous== * PM: [http://planetmath.org/?op=getobj&from=objects&id=6100 asymptote], id=6100 -- WP guess: [[asymptote]] -- Status: * PM: [http://planetmath.org/?op=getobj&from=objects&id=9475 projection of point], id=9475<sup><span style="color:red;">new!</span></sup> -- WP guess: [[projection of point]] -- Status: ==51Nxx Analytic and descriptive geometry==
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