# Blend of 2 pentagonal pyramids

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Blend of 2 pentagonal pyramids | |
---|---|

Rank | 3 |

Type | Orbiform |

Space | Spherical |

Notation | |

Bowers style acronym | Ifbah |

Elements | |

Faces | 2+4 triangles, 2 pentagons |

Edges | 2+4+4+4 |

Vertices | 2+2+4 |

Measures (edge length 1) | |

Circumradius | |

Number of external pieces | 10 |

Level of complexity | 16 |

Related polytopes | |

Conjugate | Blend of 2 pentagrammic 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 pentagonal pyramids**, or **ifbah**, is an orbiform polyhedron. It consists of 6 triangles and 2 pentagons. It is a faceting of the icosahedron, and as its name suggests, it can be formed by blending two pentagonal pyramids together such that they share an edge and the two faces adjacent to this edge.

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

## Vertex coordinates[edit | edit source]

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

## Gallery[edit | edit source]

## External links[edit | edit source]

- Klitzing, Richard. "ifbah".

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