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在幾何學中,邊收縮二十面體是一種凸多面體,是指將正二十面體的其中1條邊作邊收縮變換後 … 在幾何學中,邊收縮二十面體是一種凸多面體,是指將正二十面體的其中1條邊作邊收縮變換後所產生的多面體,由18個三角形面、27條邊和11個頂點構成,擁有四階的C2v循環群對稱性,屬於三角面多面體,是十八面體中的一個特例。 雖然邊收縮二十面體的面分布得很均勻,但不具有球體的對稱性。一般来说,面分布均勻的多面體的形狀會接近球体,但邊收縮二十面體却不具有此種特性。此外,具有這種結構的嚴格凸多面体的邊不能等長,因為有部分頂點為6三角形的公共頂點,若其為正三角形,則會造成这6個面共面,而無法组成嚴格凸多面體。因此,邊收縮二十面體亦可歸類為擬詹森多面體。成这6個面共面,而無法组成嚴格凸多面體。因此,邊收縮二十面體亦可歸類為擬詹森多面體。
, In geometry, an edge-contracted icosahedron is a polyhedron with 18 triangular faces, 27 edges, and 11 vertices.
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rdfs:comment |
In geometry, an edge-contracted icosahedron is a polyhedron with 18 triangular faces, 27 edges, and 11 vertices.
, 在幾何學中,邊收縮二十面體是一種凸多面體,是指將正二十面體的其中1條邊作邊收縮變換後 … 在幾何學中,邊收縮二十面體是一種凸多面體,是指將正二十面體的其中1條邊作邊收縮變換後所產生的多面體,由18個三角形面、27條邊和11個頂點構成,擁有四階的C2v循環群對稱性,屬於三角面多面體,是十八面體中的一個特例。 雖然邊收縮二十面體的面分布得很均勻,但不具有球體的對稱性。一般来说,面分布均勻的多面體的形狀會接近球体,但邊收縮二十面體却不具有此種特性。此外,具有這種結構的嚴格凸多面体的邊不能等長,因為有部分頂點為6三角形的公共頂點,若其為正三角形,則會造成这6個面共面,而無法组成嚴格凸多面體。因此,邊收縮二十面體亦可歸類為擬詹森多面體。成这6個面共面,而無法组成嚴格凸多面體。因此,邊收縮二十面體亦可歸類為擬詹森多面體。
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rdfs:label |
邊收縮二十面體
, Edge-contracted icosahedron
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