Digonal-triangular truncatoprismantiprismoid

The digonal-triangular truncatoprismantiprismoid is a convex isogonal polychoron that consists of 4 ditrigonal prisms, 4 ditrigonal trapezoprisms, 6 cuboids, 6 rectangular trapezoprisms and 12 rectangular frustums. However, it cannot be made uniform.

This polychoron can be alternated into a snub digonal-triangular prismantiprismoid, which is also nonuniform.

Using the ratio method, the lowest possible ratio between the longest and shortest edges is 1:$$\frac{5+\sqrt{30}}{5}$$ ≈ 1:2.09545.

Vertex coordinates
The vertices of a digonal-triangular truncatoprismantiprismoid, assuming that the edge length differences are minimized, centered at the origin, are given as Cartesian products of the vertices of ditrigon DT1 and rectangle R1, both of lengths 1 and $$\frac{5+\sqrt{30}}{5}$$:
 * DT1 × R1,
 * DT2 × R2 (DT1 rotated 180 degrees and R1 rotated 90 degrees).