Trapezohedron - Definition

Pentagonal trapezohedron
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Type	Trapezohedron
Faces	2n kites
Edges	4n
Vertices	2n+2
Face configuration	n,3,3,3
Symmetry group	Dnd
Dual polyhedron	antiprism
Properties	convex, semi-regular (face-uniform)

The trapezohedra are the Dual polyhedrons of the antiprisms. None of the faces are trapezoids, so the name is misleading. A trapezohedron is also known as a deltohedron. A deltohedron should not be confused with a deltahedron (spelled with an "a").