Dodekahedron Folding 

Cuboctahedron Folding

Truncated Octahedron Folding

Rhombicuboctahedron Folding

Truncated Icosahedron Folding

Euklidean 2nd Theorem

Thales' Theorem

Inside of an Icosahedron

Inside of an Octahedron

Inside of an Cuboctahedron

Truncated Icosahedron

Zeolith A

Truncated Octahedron Tesselation

Triangle & Plane

Methan

Ethan

Propan

Regular Tetrahedron

Pythagorean Theorem

Icosahedron Folding

The Platonic Solids