These month we have a sequence of related questions:

- If two
__convex__polyhedra have pairwise congruent faces, must they be congruent? - What if all of the faces are regular polygons?
- What if all of the faces of one (hence both) of the polyhedra are congruent (but not necessarily regular)?
- What if all of the faces of one (hence both) of the polyhedra are congruent and regular?