Pentagonal hexecontahedral tegum

The pentagonal hexecontahedral tegum, also called the pentagonal hexecontahedral bipyramid, is a convex isochoric polychoron with 120 irregular pentagonal pyramids as cells. As the name suggests, it can be constructed as a tegum based on the pentagonal hexecontahedron.

In the variant obtained as the dual of the uniform snub dodecahedral prism, if the short edges of the pentagonal hexecontahedron have length 1, its height is approximately 30.17765.