Joined triacontaditeron

The joined triacontaditeron, also known as the tetrahedral-tegmatic octacontateron, is a convex isoteric polyteron with 80 identical tetrahedral tegums as tera. It can be obtained as the dual of the uniform rectified penteract.

It can also be obtained as the convex hull of a penteract and a triacontaditeron, where the edges of the triacontaditeron are $$2\sqrt2 ≈ 2.82843$$ times the length of those of the penteract.