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单词 Regular icosahedron
释义

Regular icosahedron

中文百科

正二十面体

正二十面体的顶点能共同分成五组,每组拥有三个同心、相互垂直的黄金矩形。

正二十面体是一种正多面体,由20个正三角形组成。同时,它也是柏拉图立体、三角面多面体以及康威多面体。正二十面体是所有五种正多面体面数最多的。

正二十面体有20个面、30个边和12个顶点,其对偶是正十二面体。它的顶点布局为3.3.3.3.3或3,在施莱夫利符号中可用{3,5}来表示。

英语百科

Regular icosahedron 正二十面体

In geometry, a regular icosahedron (/ˌkɒsəˈhdrən, -kə-, -k-/ or /ˌkɒsəˈhdrən/) is a convex polyhedron with 20 faces, 30 edges and 12 vertices. It is one of the five Platonic solids.

It has five equilateral triangular faces meeting at each vertex. It is represented by its Schläfli symbol {3,5}, or sometimes by its vertex figure as 3.3.3.3.3 or 3. It is the dual of the dodecahedron, which is represented by {5,3}, having three pentagonal faces around each vertex.

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更新时间:2025/6/23 7:17:51