A triangular prism contains zero curved and 5 flat surfaces.
There are 5 flat surfaces.
six
The question is ambiguous since a rectangular pyramid and a rectangular prism will have different numbers of flat surfaces. There is no indication in the question which shape is intended.
There are 6 vertices (corners) in a triangular prism.
A triangular prism contains zero curved and 5 flat surfaces.
Four.
Four.
A triangular prism has five surfaces: two triangular faces, and three rectangular faces.
There are 5 flat surfaces.
A rectangular prism has 6 flat surfaces
It has 6 faces which are its flat surfaces.
There are five of them.
It has 5 SIDES
A prism has no curved surfaces. It has 5 or more flat faces.
six
6