# Heptagrammic pyramid

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Heptagrammic pyramid | |
---|---|

Rank | 3 |

Type | Segmentotope |

Space | Spherical |

Notation | |

Bowers style acronym | Shappy |

Coxeter diagram | ox7/2oo&#x |

Elements | |

Faces | 7 triangles, 1 heptagram |

Edges | 7+7 |

Vertices | 1+7 |

Vertex figures | 1 heptagram, edge length 1 |

7 isosceles triangles, edge lengths 1, 1, 2cos(2π/7) | |

Measures (edge length 1) | |

Circumradius | |

Volume | |

Height | |

Related polytopes | |

Army | Non-RF heppy |

Regiment | Shappy |

Dual | Heptagrammic pyramid |

Conjugates | Heptagonal pyramid, great heptagrammic pyramid |

Abstract & topological properties | |

Orientable | Yes |

Properties | |

Symmetry | I_{2}(7)×I, order 14 |

Convex | No |

Nature | Tame |

The **heptagrammic pyramid** or **shappy** is a pyramid with a heptagrammic base and 7 triangles as sides. A version with equilateral triangles exists and is orbiform.

## External links[edit | edit source]

- Klitzing, Richard. "shappy".