Heptagrammic prism (7/2)

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Heptagrammic prism
Heptagrammic prism 7-2.png
Type Uniform polyhedron
Faces 2 heptagrams
7 squares
Edges 21
Vertices 14
Vertex configuration 7/2.4.4
Wythoff symbol 2 7/2 | 2
Symmetry group D7h
Dual polyhedron Heptagrammic bipyramid
Properties nonconvex
Vertex figure
Septagrammic prism vertfig.png

In geometry, the {7/2} heptagrammic prism is one of an infinite set of nonconvex prisms formed by square sides and two regular star polygon caps, in this case two {7/2} heptagrams.

An alternative representation with hollow heptagram centers