Triangular-hexagonal duoprism

The 3-6 duoprism is a uniform duoprism that consists of 3 hexagonal prisms, 6 triangular prisms and 18 vertices.

The convex hull of two orthogonal 3-6 duoprisms is the triangular duoexpandoprism.

Vertex coordinates
The vertices of a 3-6 duoprism of edge length 1, centered at the origin, are given by:
 * (0, $\sqrt{3}$/3, 0, ±1)
 * (0, $\sqrt{3}$/3, ±$\sqrt{3}$/2, ±1/2)
 * (±1/2, -$\sqrt{3}$/6, 0, 1)
 * (±1/2, -$\sqrt{3}$/6, ±$\sqrt{3}$/2, ±1/2)