Heptagonal bipyramid
From HandWiki
| Heptagonal bipyramid | |
|---|---|
 | |
| Type | bipyramid |
| Faces | 14 triangles |
| Edges | 21 |
| Vertices | 9 |
| Schläfli symbol | { } + {7} |
| Coxeter diagram |     |
| Symmetry group | D7h, [7,2], (*227), order 28 |
| Rotation group | D7, [7,2]+, (227), order 14 |
| Dual polyhedron | heptagonal prism |
| Face configuration | V4.4.7 |
| Properties | convex, face-transitive |
The heptagonal bipyramid is one of the infinite set of bipyramids, dual to the infinite prisms. If an heptagonal bipyramid is to be face-transitive, all faces must be isosceles triangles. The resulting solid has 14 triangular faces, 9 vertices and 21 edges.[1][2]
Related polyhedra
References
- ↑ Heptagonal Dipyramid dmccooey.com [2014-6-23]
- ↑ Pugh, Anthony (1976), Polyhedra: A Visual Approach, University of California Press, pp. 21, 27, 62, ISBN 9780520030565, https://books.google.com/books?id=IDDxpYQTR7kC&pg=PA21.
External links
- Weisstein, Eric W.. "Dipyramid". http://mathworld.wolfram.com/Dipyramid.html.
- Virtual Reality Polyhedra The Encyclopedia of Polyhedra
- VRML models <7>
- Conway Notation for Polyhedra Try: dP7
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