Platonic solids

The regular polyhedra (solids whose faces are identical regular polygons like squares or equilateral triangles) are named after the Greek

philisopher Plato. There are just five of them:

tetrahedron - 4 triangles

cube (or hexahedron) - 6 squares

octahedron - 8 triangles

dodecahedron - 12 pentagons

icosahedron - 20 triangles

Done