 Decagonal bipyramid

Decagonal bipyramid Type bipyramid Faces 20 triangles Edges 30 Vertices 12 Face configuration V4.4.10 Symmetry group D_{10h}, [10,2], (*2.2.10) Dual Decagonal prism Properties convex, facetransitive 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 facetransitive, all faces must be isosceles triangles. However, there is a rather oddlooking version of the decaagonal bipyramid with each of the faces congruent having a right scalene triangle as the shape of the faces.
External links
 Weisstein, Eric W., "Dipyramid" from MathWorld.
 Olshevsky, George, Bipyramid at Glossary for Hyperspace.
 Virtual Reality Polyhedra The Encyclopedia of Polyhedra
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