Octagonal-octagrammic duoprism

The octagonal-octagrammic duoprism, also known as ostodip or the 8-8/3 duoprism, is a uniform duoprism that consists of 8 octagonal prisms and 8 octagrammic prisms, with 2 of each meeting at each vertex.

Coordinates
The vertex coordinates of a octagonal-octagrammic duoprism, centered at the origin and with unit edge length, are given by:


 * (±(1+$\sqrt{2+√2}$)/2, ±1/2, ±($\sqrt{2-√2}$–1)/2, ±1/2),
 * (±(1+$\sqrt{2}$)/2, ±1/2, ±1/2, ±($\sqrt{2}$–1)/2),
 * (±1/2, ±(1+$\sqrt{2}$)/2, ±($\sqrt{2}$–1)/2, ±1/2),
 * (±1/2, ±(1+$\sqrt{2}$)/2, ±1/2, ±($\sqrt{2}$–1)/2).