Enneagonal prism

Enneagonal prism
Type Uniform polyhedron
Faces 2 Enneagons
9 squares
Edges 27
Vertices 18
Vertex configuration 9.4.4
Wythoff symbol 2 9 | 2
Coxeter diagram
Symmetry group D9h, [9,2], (*922), order 36
Rotation group D9, [9,2]+, (922), order 18
Dual polyhedron Enneagonal dipyramid
Properties convex semiregular
Vertex figure

In geometry, the enneagonal prism (or nonagonal prism) is the seventh in an infinite set of prisms, formed by square sides and two regular enneagon caps.

If faces are all regular, it is a semiregular polyhedron.

Related polyhedra

Family of uniform prisms
Config. 3.4.4 4.4.4 5.4.4 6.4.4 7.4.4 8.4.4 9.4.4 10.4.4 11.4.4 12.4.4

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