Regular polyhedra ("poly"="many", "hedra"="faces/planes") are elementary three-dimensional geometric objects built from triangles, squares, pentagons etc... On these pages you find more information about:

• the Platonic polyhedra
  
  • the 5 basic shapes built out of 1 type of regular faces only.
  • see Wikipedia
  • see Mathworld


• 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