The top is a pyramid with five triangular sides. Hence the faces of the pyramid are a regular pentagon, five squares, and five equilateral triangles. On Berman's models of regular-faced convex ...

Besides the regular and semiregular solids, there are just ninety-two other convex polyhedra with regular faces. In 1966, the American mathematician Norman W. Johnson, a student of H.S.M. Coxeter at ...