Hexagonal duoprism

The hexagonal duoprism or hiddip, also known as the hexagonal-hexagonal duoprism, the 6 duoprism or the 6-6 duoprism, is a noble uniform duoprism that consists of 12 hexagonal prisms and 36 vertices. It is also the 12-5 gyrochoron. It is the first in an infinite family of isogonal hexagonal dihedral swirlchora and also the first in an infinite family of isochoric hexagonal hosohedral swirlchora.

This polychoron can be alternated into a triangular duoantiprism, although it cannot be made uniform.

Vertex coordinates
Coordinates for the vertices of a hexagonal duoprism of edge length 1, centered at the origin, are given by:
 * (0, ±1, 0, ±1),
 * (0, ±1, ±$\sqrt{2}$/2, ±1/2),
 * (±$\sqrt{3}$/2, ±1/2, 0, ±1),
 * (±$\sqrt{3}$/2, ±1/2, ±$\sqrt{2}$/2, ±1/2).