Triangular antitegum

The triangular antitegum, also known as the trigonal trapezohedron or rhombohedron, is an antitegum based on a triangle. If all angles are equal, the result is the regular cube. The general triangular antitegum has 6 identical rhombic faces.

Variants of the triangular antitegum exist that are dual to the triangular antipodium as well, using 2 different sets of 3 kites for faces.

Golden rhombohedra
Two of the five golden isozonohedra are rhombohedra. These are the acute golden rhombohedron and the obtuse golden rhombohedron. They are constructed as rhombohedra with golden rhombi as faces. The acute golden rhombohedron is constructed with an angle of $$\arctan(2)$$ at the apex and the obtuse ggolden rhombohedron is constructed with an angle of $$\pi - \arctan(2)$$.