This model resembles a cube with a square pyramid on one face. The faces are five square faces and four equilateral triangles. On Berman's models of regular-faced convex polyhedra, see 1978.1065.01.

A regular polyhedron is a platonic solid. (plural ‘polyhedra’) is a fully enclosed 3D shape with faces that are all polygons. ... A pyramid with a square base is a square-based pyramid.

This pyramid has a square base and four equilateral triangles on the sides. For further information about Berman's models of regular-faced convex polyhedra, see 1978.1065.01. Location Currently not on ...