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In geometry, a hemipolyhedron is a uniform star polyhedron some of whose faces pass through its center. These "hemi" faces lie parallel to the faces of some other symmetrical polyhedron, and their count is half the number of faces of that other polyhedron – hence the "hemi" prefix. The prefix "hemi" is also used to refer to certain projective polyhedra, such as the hemi-cube, which are the image of a 2 to 1 map of a spherical polyhedron with central symmetry.

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rdfs:label
  • Hemipolyhedron (en)
  • Emipoliedro (it)
  • 半多面體 (zh)
rdfs:comment
  • In geometry, a hemipolyhedron is a uniform star polyhedron some of whose faces pass through its center. These "hemi" faces lie parallel to the faces of some other symmetrical polyhedron, and their count is half the number of faces of that other polyhedron – hence the "hemi" prefix. The prefix "hemi" is also used to refer to certain projective polyhedra, such as the hemi-cube, which are the image of a 2 to 1 map of a spherical polyhedron with central symmetry. (en)
  • In geometria solida, un emipoliedro è un poliedro stellato uniforme avente alcune delle proprie facce passanti per il proprio centro. Il prefisso "emi" nel nome di questo tipo di poliedri è dovuto al fatto che tali facce tagliano il poliedro in due parti uguali aventi ognuna volume pari a metà del volume del poliedro. Il prefisso "emi" è talvolta utilizzato per riferirsi al alcuni , come ad esempio l', che sono l'immagine di una mappa 2 a 1 di un poliedro sferico con simmetria centrale. (it)
  • 在幾何學中,半多面體(英語:Hemipolyhedron)是一種面通過整體幾何中心的星形多面體。這些通過整體幾何中心的面跟某個平形多面體的面互相平行,但數量只有一半,因此稱為半多面體;而這些數量只有一半且通過整體幾何中心的面可稱為半面(hemi faces)。 (zh)
foaf:depiction
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