Editing Regular polytope (section)

===Convex polygons and polyhedra===

The earliest surviving mathematical treatment of regular polygons and polyhedra comes to us from [[ancient Greece|ancient Greek]] mathematicians. The five [[Platonic solid]]s were known to them. [[Pythagoras]] knew of at least three of them and [[Theaetetus (mathematician)|Theaetetus]] (c. 417 BC – 369 BC) described all five. Later, [[Euclid]] wrote a systematic study of mathematics, publishing it under the title ''[[Euclid's Elements|Elements]]'', which built up a logical theory of geometry and [[number theory]]. His work concluded with mathematical descriptions of the five [[Platonic solid]]s.

:{| class="wikitable"
|-
|colspan=5 align=center|'''[[Platonic solid]]s'''
|-
|align=center|[[Image:Tetrahedron.svg|75px]]
|align=center|[[Image:Hexahedron.svg|75px]]
|align=center|[[Image:Octahedron.svg|75px]]
|align=center|[[Image:POV-Ray-Dodecahedron.svg|75px]]
|align=center|[[Image:Icosahedron.svg|75px]]
|-
|[[Tetrahedron]]||[[Cube]]||[[Octahedron]]||[[Dodecahedron]]||[[Icosahedron]]
|}