A polyhedron with twelve pentagonal faces. The regular dodecahedron is one of the five Platonic solids (along with the tetrahedron, hexahedron (cube), octahedron, and icosahedron. The faces of a regular dodecahedron are all regular pentagons.(pr. DOH-də-kə-HEE-drən)The plural form can be either dodecahedrons or dodecahedra.Other resources about cubes: Low-tech models of polyhedra. Here are printable templates for making paper models of the regular polyhdra including one for a dodecahedron in two sections, one for its top, and one for its bottom. To use the templates, print the images, and then copy them onto heavy card stock (60 lb. stock is best) with as much magnification as seems suitable. Also see mathematics, polygon, and vertex.