There are a number of angles associated with each Platonic solid. It is one of 5 Platonic graphs, each a skeleton of its Platonic solid. Starting with a Platonic solid, truncation involves cutting away of corners. The most familiar dodecahedron is the regular dodecahedron, which is a Platonic solid. The regular tetrahedron is the simplest Platonic solid. The base polyhedron of a Kleetope does not need to be a Platonic solid. Each platonic solid and its dual have the same rectified polyhedron. Each one's bases are a Platonic solid and its expansion. The Platonic solid that is defined by the dimensional cross is the Octahedron. In three-dimensional space, a Platonic solid is a regular, convex polyhedron. Because of this, three-dimensional n-flakes are also called platonic solid fractals.