2 - Platonic solids
There are only five regular polyhedra:
Tetrahedron
Octahedron
Icosahedron
Hexahedron
or Cube
Dodecahedron
They are called
Platonic solids
.
The rotating images of Platonic solids were created by
Cyp
, who placed them on Wikicommons under a
GNU Free Documentation License
. You can see them on the Wikipedia article on
Platonic solids
.