six
5
A triangular prism contains zero curved and 5 flat surfaces.
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.
It has 7 surfaces/faces
A rectangular prism has 6 flat surfaces
It has 6 faces which are its flat surfaces.
A prism has no curved surfaces. It has 5 or more flat faces.
six
5
6
A triangular prism contains zero curved and 5 flat surfaces.
5 Flat surfaces 4 flat surfaces (3 for the sides and 1 for the base).
8
6 flat surfaces - known as faces, 12 edges 8 vertices.
A rectangular prism is basically an elongated cube. Just like a cube, it has six sides.
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.