Two. All prismatic shapes have two bases.
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a triangular prism has to triangular bases while a rectangular prism has a rectangle as the bases.
A triangular prism
Bases and faces are the same, so a triangular prism will have 6 faces/bases.
The parallel bases would be the two triangular faces, on either end of the prism.
A triangular prism has 5 faces: 2 bases that are triangles, and 3 rectangles.