Nonahedron
pentagon
An octagonal pyramid.
A triangular prism.
A nonagon.
It is a quadrilateral based pyramid.
A solid cone has 2 faces and 1 edge
triangular prism
Triangular prism
Oh, what a happy little question! The shape you're describing is a nonagon, also known as a enneagon. It has 9 faces, 21 edges, and 14 vertices. Isn't it just fascinating how shapes come together in the art of geometry? Keep exploring and painting those beautiful shapes, my friend.
A triangular prism
it can have 12 edges any 3d square can