Decagonal bipyramid
Decagonal bipyramid
Type bipyramid
Faces 20 triangles
Edges 30
Vertices 12
Face configuration V4.4.10
Symmetry group D10h
Dual Decagonal prism
Properties convex, face-transitive

In geometry, a decagonal bipyramid is one of the infinite set of bipyramids, dual to the infinite prisms. If a decagonal bipyramid is to be face-transitive, all faces must be isosceles triangles. However, there is a rather odd-looking version of the decaagonal bipyramid with each of the faces congruent having a right scalene triangle as the shape of the faces.

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