Platonic Solids (© Zumthie)

Regular polyhedra ("poly"="many", "hedra"="faces/planes") are elementary threedimensional geometric objects built from triangles, squares, pentagons etc... On these pages you find more information about:
 the Platonic polyhedra
 the Archimedean polyhedra
 the 13 derived shapes built out of different types of regular faces.
 see Wikipedia
 see Mathworld
 the Rhombic dodecahedron
 the polyhedron which is neither a Platonic nor an Archimedean solid, but rather a Catalan solid (dual of the Archimedean
cuboctahedron) consisting of 12 rhombic faces. It plays a crucial role in the Logical Geometry
research programme
 see Wikipedia
 see Mathworld
