Meaning | A solid figure bounded by plane polygons or faces. |
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Narrower | concave polyhedron | A polyhedron some of whose plane sections are concave polygons |
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convex polyhedron | A polyhedron any plane section of which is a convex polygon |

decahedron | Any polyhedron having ten plane faces |

dodecahedron | Any polyhedron having twelve plane faces |

hexahedron | Any polyhedron having six plane faces |

icosahedron | Any polyhedron having twenty plane faces |

octahedron | Any polyhedron having eight plane faces |

pentahedron | Any polyhedron having five plane faces |

prism | A polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms |

prismatoid | A polyhedron whose vertices all lie in one or the other of two parallel planes |

pyramid | A polyhedron having a polygonal base and triangular sides with a common vertex |

regular polyhedron, regular convex solid, regular convex polyhedron, Platonic body, Platonic solid, ideal solid | Any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent |

tetrahedron | Any polyhedron having four plane faces |

trapezohedron | A polyhedron whose faces are trapeziums |

Broader | solid | A three-dimensional shape |
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Spanish | poliedro |
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Catalan | poliedre, políedre |
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Adjectives | polyhedral | of or relating to or resembling a polyhedron |
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