Five: Four sides and the base.
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A pyramid has 5 flat surfaces, 4 for the walls and 1 for the bottom.
it has 0 curved faces
There are six faces in a rectangular prism6 faces
It has three shapes. Two surfaces are flat circles and one is a curved rectangle.
A tetrahedron is a triangular based pyramid that has 4 faces, 6 edges and 4 vertices.