# Blend of 2 pentagrammic pyramids

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Blend of 2 pentagrammic pyramids | |
---|---|

Rank | 3 |

Type | Orbiform |

Space | Spherical |

Notation | |

Bowers style acronym | Gifbah |

Elements | |

Faces | 2+4 triangles, 2 pentagrams |

Edges | 2+4+4+4 |

Vertices | 2+2+4 |

Measures (edge length 1) | |

Circumradius | |

Number of external pieces | 28 |

Level of complexity | 53 |

Related polytopes | |

Conjugate | Blend of 2 pentagonal pyramids |

Abstract & topological properties | |

Flag count | 56 |

Euler characteristic | 2 |

Orientable | Yes |

Genus | 0 |

Properties | |

Symmetry | K_{2}×I, order 4 |

Convex | No |

Nature | Tame |

The **blend of 2 pentagrammic pyramids**, or **gifbah**, is an orbiform polyhedron. It consists of 6 triangles and 2 pentagrams. It is a faceting of the great icosahedron and thus also of the small stellated dodecahedron. As its name suggests, it can be formed by blending two pentagrammic pyramids together such that they share an edge and the two triangles adjacent to that edge.

It appears as a cell of the great stellated dodecahedral extended double antiprism.

## Vertex coordinates[edit | edit source]

The vertices of a blend of 2 pentagrammic pyramids of edge length 1 are:

## Gallery[edit | edit source]

## External links[edit | edit source]

- Bowers, Jonathan. "Batch 2: Ike and Sissid Facetings" (#16 under sissid).