A nonagon has 9 edges.
It is a triangular prism
that is impossible!!! you cant have 2 edges make a shape
Hey , its a Triangle
A non geometric shape can be defined as shapes with irregular contours, and whose edges are not straight. On the other hand, geometric shapes are shapes with regular contours and straight edges such as squares, triangles, or circles. ~by Kate Wellsonberg
it's sides and the answer is a nonagon
The only regular geometric shape that fits your description would be an elipse. That is a circular shape so it has no straight edges, and appears to be a squashed circle.
pentagonal prism
I believe it is a cone, a cylinder has three faces.
It is a cuboid which has 6 faces, 12 edges and 8 vertices
nonagon
It is a triangular based pyramid which also has 4 vertices.
The geometric shape that would almost match those characteristics is a triangular pyramid, as it would have four faces rather than three