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A pyramid has at least four faces (a triangular base, with three triangular faces converging at an apex). However, the base of the pyramid can be any polygon.

Given a base of n sides, the pyramid will have n+1 faces, n+1 vertices, and 2n sides.

Thus a pyramid on a pentagonal base would have 6 faces (the base, plus one triangle touching each side of the base), 6 vertices, and 10 sides.

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17y ago

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