9
A NoNaGonAl PyRaMiD HaS 27 eDges
9.....
A nonagon has 9 sides
A nonagonal prism has nine faces. It has a total of 18 vertices. A nonagonal prism also has 27 edges.
Edges: 27 Faces: 11 Vertices: 18
A nonagonal prism.
There are many possibilities. A nonagonal pyramid A hexagonal prism A hexagonal dipyramid are three.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges. 18 base edges and 9 lateral edges
A nonagon is nine sided. So, the base would have 9 sides and each face would be triangle. 18 edges would be my answer.
A pyramid with 18 edges would be called a nonagonal pyramid. A prism with 18 edges is called a hexagonal prism.
A nonagonal prism has eleven faces.