Heptagonal bipyramid
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]
Heptagonal bipyramid | |
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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 |
Related polyhedra
Name | Digonal bipyramid | Triangular bipyramid (J12) | Square bipyramid (O) | Pentagonal bipyramid (J13) | Hexagonal bipyramid | Heptagonal bipyramid | Octagonal bipyramid | Enneagonal bipyramid | Decagonal bipyramid | ... | Apeirogonal bipyramid |
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Polyhedron image | ![]() |
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Spherical tiling image | ![]() |
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Plane tiling image | ![]() |
Face configuration | V2.4.4 | V3.4.4 | V4.4.4 | V5.4.4 | V6.4.4 | V7.4.4 | V8.4.4 | V9.4.4 | V10.4.4 | ... | V∞.4.4 |
Coxeter diagram | ![]() ![]() ![]() ![]() ![]() |
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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.
External links
- Weisstein, Eric W. "Dipyramid". MathWorld.
- Virtual Reality Polyhedra The Encyclopedia of Polyhedra
- VRML models <7>
- Conway Notation for Polyhedra Try: dP7
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