Elongated square pyramid

The elongated square pyramid, or esquipy, is one of the 92 Johnson solids. It consists of 4 triangles and 1+4 squares. It can be constructed by attaching a cube, seen as a square prism, to the base of the square pyramid..

If a second pyramid is attached to the opposite face of the cube, the result is the elongated square bipyramid.

Vertex coordinates
An elongated square pyramid of edge length 1 has the following vertices:
 * (±1/2, ±1/2, ±1/2),
 * (0, 0, (1+$\sqrt{2}$)/2).