An -gonal cupola (possible for only , 4, 5) is a Polyhedron having Triangular and
Square faces separating an and a Regular Polygon. The coordinates of the base
Vertices are

(1) |

(2) |

(3) | |||

(4) |

and is the height, obtained by letting in the equations (1) and (2) to obtain the coordinates of neighboring bottom and top Vertices,

(5) | |||

(6) |

Since all side lengths are ,

(7) |

(8) |

(9) |

(10) |

**References**

Johnson, N. W. ``Convex Polyhedra with Regular Faces.'' *Canad. J. Math.* **18**, 169-200, 1966.

© 1996-9

1999-05-25