http://stromlights.copecoproducts.com/tetrahedron.htm
STRøM LIGHTS DESIGNS Filtronica Incorporated      *      1672 E. Main Street, Suite E, Ramona, CA 92065     *      Phone: (760) 788-4975 • Toll Free: (888) 345-8766. STRøM LIGHTS REGULAR POLYHEDRA TETRAHEDRON The simplest regular polygon OCTAHEDRON’S ICOSAHEDRON HEXAHEDRON DODECAHEDRON RHOMBIC DODECAHEDRON ARCHIMEDEAN Identical regular polygonal faces. 8 Triangular faces Has 30 rhombic faces 12 regular pentagonal faces with three corners. Faces are a combination of different regular polygons. 20 triangular faces The “cube”