# Bitruncatodecachoron

Bitruncatodecachoron | |
---|---|

Rank | 4 |

Type | Isogonal |

Notation | |

Bowers style acronym | Bited |

Coxeter diagram | xo3xo3ox3ox&#zy |

Elements | |

Cells | 10 tetrahedra, 30 tetragonal disphenoids, 60 digonal disphenoids, 20 triangular antiprisms |

Faces | 40 triangles, 120+120 isosceles triangles |

Edges | 20+60+120 |

Vertices | 40 |

Vertex figure | Hexakis triangular cupola |

Measures (based on two truncated pentachora of edge length 1) | |

Edge lengths | Edges of truncated pentachora (20+60): 1 |

Lacing edges (120): | |

Circumradius | |

Central density | 1 |

Related polytopes | |

Army | Bited |

Regiment | Bited |

Dual | Biapiculatodecachoron |

Abstract & topological properties | |

Euler characteristic | 0 |

Orientable | Yes |

Properties | |

Symmetry | A_{4}×2, order 240 |

Convex | Yes |

Nature | Tame |

The **bitruncatodecachoron** or **bited** is a convex isogonal polychoron that consists of 10 tetrahedra, 20 triangular antiprisms, 30 tetragonal disphenoids, and 60 digonal disphenoids. 1 tetrahedron, 3 triangular antiprisms, 3 tetragonal disphenoids, and 6 digonal disphenoids join at each vertex. It can be obtained as the convex hull of two oppositely oriented truncated pentachora.

This polychoron generally has one degree of variation. If the edge length of the truncated pentachora are a (those surrounded by truncated tetrahedra) and b (of tetrahedra), its lacing edges have length and it has circumradius .

Using the ratio method, the lowest possible ratio between the longest and shortest edges is 1: ≈ 1:1.18322.

## Vertex coordinates[edit | edit source]

Coordinates for the vertices of a bitruncatodecachoron, based on two truncated pentachora of edge length 1, centered at the origin, are given by:

## External links[edit | edit source]

- Bowers, Jonathan. "Pennic and Decaic Isogonals".

- Klitzing, Richard. "bited".