せいはちめんたい
正八面体
1. regular octahedron
2. OctahedronIn geometry, an octahedron is a polyhedron with eight faces. A regular octahedron is a Platonic solid composed of eight equilateral triangles, four of which meet at each vertex. An octahedron is the three-dimensional case of the more general concept of a cross polytope.
Read “Octahedron” on English Wikipedia
Read “正八面体” on Japanese Wikipedia
Read “Octahedron” on DBpedia
Read “Octahedron” on English Wikipedia
Read “正八面体” on Japanese Wikipedia
Read “Octahedron” on DBpedia
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