Pentagonal triswirlprism

The pentagonal triswirlprism is a convex isogonal polychoron and member of the duoprismatic swirlprism family that consists of 30 pentagonal gyroprisms and 150 phyllic disphenoids. 4 pentagonal gyroprisms and 8 phyllic disphenoids join at each vertex. It can be obtained as a subsymmetrical faceting of the pentadecagonal duoprism. It is the third in an infinite family of isogonal pentagonal dihedral swirlchora.

The ratio between the longest and shortest edges is 1:$$\frac{\sqrt{30+2\sqrt5+2\sqrt{150+30\sqrt5}}}{4}$$ ≈ 1:1.99906.