Properties of 3D shapes 3D shapes have faces (sides), edges and vertices (corners). Faces - A face is a flat or curved surface on a 3D shape. For example a cube has six faces, a cylinder has three ...

For any 3D shape that is a polyhedron, the number of edges is equal to two less than the sum of the vertices and faces. This is the formula 𝑬 = 𝑭 + 𝑽 – 2 ...