Icosahedron
An icosahedron has 20 triangular faces, 30 edges and 12 vertices.
This image of an icosahedron was created by
Tom Gettys
using the program
Persistence of Vision.
See also
Transparent Icosahedron,
Tetrahedron,
Hexahedron,
Octahedron,
Dodecahedron,
Platonic Solid