Polyhedra Representations

Adding to an already rich set of geometric regions, Version 12 brings new 3D basic regions with the Polyhedron object and the platonic solids Tetrahedron, Cube, Octahedron, Dodecahedron and Icosahedron.

The canonical representation of a polyhedron, given by CanonicalizePolyhedron, unifies and simplifies operations on polyhedra.

A coherent design and representation of Polygon and Polyhedron.