The pentagonal dipyramid is one of the convex Deltahedra, and Johnson Solid . It is also
the Dual Polyhedron of the Pentagonal Prism. The distance between two adjacent Vertices on the base of the Pentagon is

(1) |

and the distance between the apex and one of the base points is

(2) |

(3) |

(4) |

(5) |

(6) |

(7) |

© 1996-9

1999-05-26