Pyramids and bipyramids | Johnson solids

Elongated triangular bipyramid

In geometry, the elongated triangular bipyramid (or dipyramid) or triakis triangular prism is one of the Johnson solids (J14), convex polyhedra whose faces are regular polygons. As the name suggests, it can be constructed by elongating a triangular bipyramid (J12) by inserting a triangular prism between its congruent halves. A Johnson solid is one of 92 strictly convex polyhedra that is composed of regular polygon faces but are not uniform polyhedra (that is, they are not Platonic solids, Archimedean solids, prisms, or antiprisms). They were named by Norman Johnson, who first listed these polyhedra in 1966. The , an African musical instrument woven out of strips of plant leaves, is made in the form of a series of elongated bipyramids with non-equilateral triangles as the faces of their end caps. (Wikipedia).

Elongated triangular bipyramid
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Related pages

Triangular bifrustum | Pentagonal bipyramid | Triangular bipyramid | Surface area | Geometry | Johnson solid | Face (geometry) | Regular polygon | Height | Triangle | Bipyramid | Elongated square bipyramid | Convex set | Formula | Triangular prism | Volume