Tri-hecatonicosadiminished hecatonicosachoron

The tri-hecatonicosadiminished hecatonicosachoron or tridhi is a convex isogonal polychoron that consists of 120 gyroelongated triangular bipyramids, 360 digonal disphenoids and 360 phyllic disphenoids. However, it cannot be made scaliform.

It can be constructed by removing three inscribed hexacosichora of edge length $\sqrt{3+√5}$ from a hecatonicosachoron.

The ratio between the longest and shortest edges is 1:$\sqrt{3+√5}$ ≈ 1:2.28825.