Triakis tetrahedral tegum

The triakis tetrahedral tegum, also called the triakis tetrahedral bipyramid, is a convex isochoric polychoron with 24 sphenoids as cells. As the name suggests, it can be constructed as a tegum based on the triakis tetrahedron.

In the variant obtained as the dual of the uniform truncated tetrahedral prism, if the triakis tetrahedron's short edge has length 1, its height is $$\frac52 = 2.5$$.