Heptagrammic antiprism (7/3)

In geometry, the {​⁷⁄₃} heptagrammic antiprism is one in an infinite set of nonconvex antiprisms formed by triangle sides and two regular star polygon caps, in this case two {​⁷⁄₃} heptagrams.

Heptagrammic antiprism
Type	Uniform polyhedron
Faces	2 Heptagrams 14 triangles
Edges	28
Vertices	14
Vertex configuration	​^7⁄3.3.3.3
Wythoff symbol	2 2 7/3
Schläfli symbol	s{2,14/3} sr{2,7/3}
Coxeter diagram
Symmetry group	D7d
Dual polyhedron	Heptagrammic deltohedron
Properties	nonconvex
Vertex figure

3D model of a (uniform) {​⁷⁄₃} heptagrammic antiprism

See also

• Prismatic uniform polyhedron
• Heptagrammic antiprism {​⁷⁄₂}