# Enneagonal duotransitionaltertegum

The **enneagonal duotransitionaltertegum** is a convex isochoric polychoron and member of the duotransitionaltertegum family with 324 kite pyramids as cells.

Enneagonal duotransitionaltertegum | |
---|---|

Rank | 4 |

Type | Isotopic |

Elements | |

Cells | 324 kite pyramids |

Faces | 324 scalene triangles, 324 isosceles triangles, 162 kites |

Edges | 36+81+162+324 |

Vertices | 18+18+81 |

Vertex figure | 18 vertical-laterobisected joined enneagonal prisms, 18 enneagonal tegums, 81 digonal scalenohedra |

Measures (edge length 1) | |

Central density | 1 |

Related polytopes | |

Dual | Enneagonal duotransitionalterprism |

Abstract & topological properties | |

Euler characteristic | 0 |

Orientable | Yes |

Properties | |

Symmetry | I_{2}(9)≀S_{2}, order 648 |

Convex | Yes |

Nature | Tame |

Each cell of this polychoron has mirror symmetry, with 1 kite, 2 isosceles triangles, and 2 scalene triangles for faces.