A regular polygon is a polygon with both equal side lengths and vertex angles.
Regular polyhedra are polygons with both identical regular faces and equal face-to-face angles.
There are five regular polyhedra: tetrahedron, cube, octahedron, icosahedron, dodecahedron.
| polyhedra | vertices | edges | faces | |
| tetrahedron | 4 | 6 | 4 | |
| cube | 8 | 12 | 6 | |
| octahedron | 6 | 12 | 8 | |
| dodecahedron | 20 | 30 | 12 | |
| icosahedron | 12 | 30 | 20 | |