Type Uniform polyhedron Edges 27 Vertex configuration 9.4.4 | Faces 2 Enneagons
9 squares Vertices 18 Wythoff symbol 2 9 | 2 | |
 | ||
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.
References
Enneagonal prism Wikipedia(Text) CC BY-SA