Heptagonal trapezohedron
| Heptagonal trapezohedron | |
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| Type | trapezohedron |
| Conway | dA7 |
| Coxeter diagram |     
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| Faces | 14 kites |
| Edges | 28 |
| Vertices | 16 |
| Face configuration | V7.3.3.3 |
| Symmetry group | D7d, [2+,14], (2*7), order 28 |
| Rotation group | D7, [2,7]+, (227), order 14 |
| Dual polyhedron | heptagonal antiprism |
| Properties | convex, face-transitive |
The heptagonal trapezohedron or deltohedron is the fifth in an infinite series of face-uniform (isohedral) polyhedra which are dual polyhedron to the antiprisms. It has 14 faces which are congruent kites.
See also
| Trapezohedron name | Digonal trapezohedron (Tetrahedron) |
Trigonal trapezohedron | Tetragonal trapezohedron | Pentagonal trapezohedron | Hexagonal trapezohedron | Heptagonal trapezohedron | Octagonal trapezohedron | Decagonal trapezohedron | Dodecagonal trapezohedron | ... | Apeirogonal trapezohedron |
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Plane tiling image | 
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| Face configuration | V2.3.3.3 | V3.3.3.3 | V4.3.3.3 | V5.3.3.3 | V6.3.3.3 | V7.3.3.3 | V8.3.3.3 | V10.3.3.3 | V12.3.3.3 | ... | V∞.3.3.3 |
External links
- Weisstein, Eric W. "Trapezohedron". MathWorld.
- Virtual Reality Polyhedra The Encyclopedia of Polyhedra
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