Duoexpandotegum

A duoexpandotegum is an isotopic polytope constructed as the dual of a duoexpandoprism. The simplest possible duoexpandotegum is the digonal-square tegmantitegmoid, which can be thought of as the digonal duoexpandotegum, while the simplest unique duoexpandotegum is the triangular duoexpandotegum.

in 4D, an n-gonal duoexpandotegum has 4n2 cells. Each cell is a mirror-symmetric variant of the triangular antitegum with 4 kites and 2 irregular tetragons as faces. If n is equal to 2, then the cell becomes a mirror-symmetric wedge, with 1 isosceles trapezoid, 2 kites, and 2 isosceles triangles as faces.