In geometry, the elongated pyramids are an infinite set of polyhedra, constructed by adjoining an pyramid to an prism. Along with the set of pyramids, these figures are topologically self-dual.
There are three elongated pyramids that are Johnson solids:
Higher forms can be constructed with isosceles triangles.
| name | faces | ||
|---|---|---|---|
| elongated triangular pyramid (J7) | 3+1 triangles, 3 squares | ||
| elongated square pyramid (J8) | 4 triangles, 4+1 squares | ||
| elongated pentagonal pyramid (J9) | 5 triangles, 5 squares, 1 pentagon |