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| Trigonal trapezohedron | |
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 Click on picture for large version. |
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| Type | trapezohedra |
| Faces | 6 rhombi |
| Edges | 12 |
| Vertices | 8 |
| Face configuration | 3,3,3,3 |
| Symmetry group | D3d |
| Dual polyhedron | trigonal antiprism |
| Properties | convex, face-transitive |
The trigonal trapezohedron or deltohedron is the first in an infinite series of face-uniform polyhedra which are dual polyhedron to the antiprisms. It has six faces which are congruent rhombi.
Trigonal trapezohedrons are a subset of the rhombohedrons. The cube is a special case with square faces.
