Enneagrammic prism
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9-2 enneagrammic prism | |
---|---|
Type | Uniform polyhedron |
Faces | 2 enneagrams 9 squares |
Edges | 27 |
Vertices | 18 |
Vertex configuration | 9/2.4.4 |
Wythoff symbol | 2 9/2 | 2 |
Symmetry group | D9h, [2,9],(*299), order 36 |
Dual polyhedron | Enneagrammic bipyramid |
Properties | nonconvex |
Vertex figure | |
In geometry, the enneagrammic prism is a nonconvex prism formed by square sides and two regular enneagram caps. There are two forms based on the two types of enneagrams: {9⁄2} and {9⁄4}.
Sources[edit]
- Antiduoprisms at polytope.net
- A128112 at oeis.org
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