Octagonal prism

The octagonal prism, or op, is a prismatic uniform polyhedron. It consists of 2 octagons and 8 squares. Each vertex joins one octagon and two squares. As the name suggests, it is a prism based on an octagon.

It can also be obtained from the small rhombicuboctahedron by removing two opposing square cupolas. It can therefore also e thought of as a bidiminished small rhombicuboctahedron.

Vertex coordinates
An octagonal prism of edge length 1 has vertex coordinates given by:
 * (±1/2, ±(1+$\sqrt{(5+2√2)/2}$)/2, ±1/2),
 * (±(1+$\sqrt{2}$)/2, ±1/2, ±1/2).