Octagrammic crossed-antiprism

In geometry, the octagrammic crossed-antiprism is one in an infinite set of nonconvex antiprisms formed by triangle sides and two regular star polygon caps, in this case two octagrams.

Octagrammic crossed-antiprism
Type	Uniform polyhedron
Faces	2 {8/3} 16 {3}
Edges	32
Vertices	16
Vertex configuration	8/5.3.3.3
Wythoff symbol	|2 2 8/5
Schläfli symbol	s{2,16/5}
Coxeter diagram
Symmetry group	D8d, [2+,16],(2*8), order 32
Dual polyhedron	Octagrammic concave deltohedron
Properties	nonconvex
Vertex figure

See also

• Prismatic uniform polyhedron
• Octagrammic antiprism

External links

• Weisstein, Eric W. "Antiprism". MathWorld.
• Paper models of prisms and antiprisms