1. Triangular bipyramidIn geometry, the triangular bipyramid (or dipyramid) is the first in the infinite set of face-transitive bipyramids. It is the dual of the triangular prism with 6 isosceles triangle faces. It is also one of the Johnson solids, (J12) with equilateral triangle faces. As the name suggests, it can be constructed by joining two tetrahedra along one face. It is a convex deltahedron.
Read “Triangular bipyramid” on English Wikipedia
Read “双三角錐” on Japanese Wikipedia
Read “Triangular bipyramid” on DBpedia
Read “Triangular bipyramid” on English Wikipedia
Read “双三角錐” on Japanese Wikipedia
Read “Triangular bipyramid” on DBpedia
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