of 5 edges. Consider the inscribed cube, as in http://commons.wikimedia.org/wiki/File:Dodecahedron-with-inscribed-cube.svg . Each group consists of a...
of 5 edges. Consider the inscribed cube, as in http://commons.wikimedia.org/wiki/File:Dodecahedron-with-inscribed-cube.svg . Each group consists of a...