Triangular double antitegmoid

The triangular double antitegmoid is a convex isochoric polychoron and member of the double antitegmoid family with 36 order-5 truncated bi-apiculated tetrahedra as cells. It is the first in an infinite family of isochoric triangular antitegmatic swirlchora.

Each cell of this polychoron has rectangular pyramidal symmetry, with 4 mirror-symmetric pentagons, 2 isosceles trapezoids, and 4 kites for faces.