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==[[Geometry]]== *[[Line-cube intersection]] *[[Ammann tilings]] *[[Anisotropic triangles]] *[[Antipodal symmetry]] *[[Apeirogonal dipyramid (apeirogonal prism dual)]] *[[Arnold's invariants]] (or [[Arnold invariants]]) (J± and St) see https://en.wikipedia.org/wiki/Draft:Arnold_invariants *[[Bourgain's conjecture]] [https://www.quantamagazine.org/statistics-postdoc-tames-decades-old-geometry-problem-20210301/] *[[Circle plane]] <!--2009-03-05T21:35:42Z--> *[[Construction of conic sections]] 00:31, 17 March 2011 (UTC) *[[Cut-and-project]] - <!--2013-07-04--> *[[Decakismyriagon]] (100000-sided polygon) *[[Diametral circle]] <!--2005-11-15T07:20:14Z--> *[[Diametral lens]] <!--2005-11-15T07:20:14Z--> *[[Differences between a catenary, parabola, and hyperbola]] <!--2010-05-14T00:41:00Z--> *[[Divider dimension]] <!--2012-12-17T21:42:00Z--> *[[Euler segment]] *[[Geometric figures]] or [[List of common geometric figures]]. As it is, I can't find the names of some simple figures. I shouldn't have to go searching and searching in "polygons" and "curvilinear figures" and "three-dimensional figures." A simple list or table with illustrations and either short descriptions or Wikipedia links would be fine. I'm not looking for some complicated technically correct dense mathematical discussion, just a way to find out the basics. *[[Geometric triality]], briefly mentioned at [[triality]] but a different concept *[[Haruki's lemma]] *[[Hexad]] *[[Milnor's theorem]] [http://mathworld.wolfram.com/MilnorsTheorem.html] Note: half the theorem is stated at [[Growth rate (group theory)]], I don't think much more is needed apart from adding the other half and maybe a redirect (with a more precise page name then simply "Milnor's theorem). *[[Mixed geometry]] *[[Model set]] (cf [[Harmonious set]]) *[[Nesting polygons]] <!--2010-04-06T01:38:47Z--> *[[Noncommutative plane]] <!--2006-03-10T20:21:37Z--> *[[Operational mathematics]] <!--2006-08-24T13:21:38Z--> *[[Parabolic spandrel]] *[[Pentacontahenagon]] (51-sided polygon) *[[Peritrochoid]] <!--2008-06-18T14:19:04Z--> * [[Petersen–Schoute theorem]] -<ref>{{cite book |title = Geometry Revisited| author1-link = Harold Scott MacDonald Coxeter | last1=Coxeter | first1=H.S.M. | author2-link=S. L. Greitzer | last2=Greitzer | first2=S.L. | year = 1967| publisher = [[Mathematical Association of America]]| location = [[Washington, D.C.]] | series=[[New Mathematical Library]] | volume=19 | isbn = 978-0-88385-619-2| zbl=0166.16402 | page=100 }}</ref> <!--2014-06-15--> *[[Polystix]], Similar to [[Tetrastix]] but for sticks of different cross-sections, such as equilateral triangles (tristix) and regular hexagons (hexastix).<ref>{{cite book |title=The Symmetries of Things| author1-link= John H. Conway | author2-link= Heidi Burgiel |author3-link= Chaim Goodman-Strauss| last1=Conway| last2=Burgiel |last3= Goodman-Strauss | first1 = John | first2 = Heidi | first3= Chaim | year = 2008 | publisher= [[A K Peters]] | location = Wellesley, Massachusetts | isbn = 978-1-56881-220-5 | mr = 2410150 | chapter= Polystix | page = 346-348}}</ref> I don't own the reference book myself, but from the limited google books preview, I gather that they are related to [[Crystal system | crystalline structures]] and regular [[Sphere packing | spherical packings]] of 3d space. As such it may be better to add a redirect to a page about one of those topics, or to the Tetrastix page, and also add complimentary material there explaining the relationship. * [[Quasilattice]] *[[Purser's theorem]] From http://mathworld.wolfram.com/PursersTheorem.html but I don't understand how one chooses those <math>\pm</math> signs. So a bit clearer statement is needed. *[[Shape grammar theory]] <!--2006-03-03T10:49:09Z--> *[[Stevanović's Circle]] http://mathworld.wolfram.com/StevanovicCircle.html *[[Tripling a square]] *[[Theory of proportions]] <!--2008-03-17T12:43:59Z--> *[[Triangle midsegment conjecture]] (see [http://www.geom.uiuc.edu/~dwiggins/conj20.html], should probably be a redirect) <!--2006-10-18T21:26:18Z--> *[[Uncertain geometry]] (paper 2008 Simon Jackson commutative representation of Quantum Mechanics?)<!--2008-10-27T17:40:33Z--> - also listed under "Algebraic geometry" and under "Differential geometry and topology". *[[Weak separation property]] (fractal geometry) <!--2006-07-19T02:22:38Z--> *[[directed angles]], an extremely useful result in euclidean geometry, simplifying many problems. *[[Wise's conjecture]], explanation on https://ldtopology.wordpress.com/2012/03/06/wises-conjecture/, in fact there should probably be a page on [[CAT(0) cube complex]]es or at least a section in the page for [[CAT(0) space]], which would include this. *[[Geometric manifold]] *[[Sutured manifold]] (could probably be a redirect to [[Thurston norm]], though the page currently lacks substantial info on the topic and should be edited before such a redirect)
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