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I am guessing 6 parelle sides.
A regular pentagon does not have any parallel sides. In contrast, a pentagonal prism has two parallel and congruent bases.
Penta means 5. In other words none if it is a regular prism.
There are 2 hexagonal faces: the top and the bottom. All the other 6 are rectangles (or squares, depending on the height of the prism).
A triangular prism has 9 parallel lines