Truncated decagonal duoprism

The truncated decagonal duoprism or tadedip is a convex isogonal polychoron that consists of 20 truncated decagonal prisms and 100 tetragonal disphenoids. 1 tetragonal disphenoid and 3 truncated decagonal prisms join at each vertex. It can be formed by truncating the decagonal duoprism.

It can also be obtained as the convex hull of 2 semi-uniform decagonal-icosagonal duoprisms chosen such that the icosagonal and decagonal prisms have the same circumradius. if the icosagons of this duoprism have edge length 1, the decagons have edge length $$1+\sqrt{\frac{10-2\sqrt5}{5}} ≈ 2.05136$$.

Using the ratio method, the lowest poossible ratio between the longest and shortest edges is 1:$$\frac{\sqrt{5+\sqrt5}}{2}$$ ≈ 1:1.34500.