Octahedron
01
八面体, 八面體
a geometric figure with eight triangular faces, twelve edges, and six vertices
例子
The faces of an octahedron are all equilateral triangles, and each vertex is the meeting point of four triangles.
八面体的面都是等边三角形，每个顶点是四个三角形的交汇点。
The eight faces of an octahedron divide space into regions that are congruent to tetrahedra.
八面体的八个面将空间分割成与四面体全等的区域。
