Edges - An edge is where two faces meet. For example a cube has 12 edges. Vertices - A vertex is a corner where edges meet (the plural is vertices). For example a cube has 8 vertices. 2D shapes ...

For all polyhedra the number of edges is two less than the sum of the number of vertices and faces. This is shown in the formula \(E\) = \(V\) + \(F\) – 2 The flat surface of a cube is a face.