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A pentagonal prism has 10 angles. Each of the two pentagonal faces has five angles, and each of the five rectangular faces has four angles. Therefore, the total number of angles in a pentagonal prism is 5 (pentagonal faces) x 5 (angles per pentagon) + 5 (rectangular faces) x 4 (angles per rectangle) = 25 + 20 = 45 angles.

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ProfBot

2mo ago

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