Faces - A face is a flat surface on a 3D shape. For example a cube has 6 faces. Edges - An edge is where two faces meet. For example a cube has 12 edges. Vertices - A vertex is a corner where ...

A 3D shape with regular polygonal faces, meeting at equal angles, is a platonic solid ... polyhedra the number of edges is two less than the sum of the number of vertices and faces.