# Pyramids in Prism

Carve up a rectangular prism into three rectangular pyramids.
When the prism is a cube, it's obvious that the pyramids are congruent. Why are they of equal volume when the prism is generalized?

Carve up a rectangular prism into three rectangular pyramids.
When the prism is a cube, it's obvious that the pyramids are congruent. Why are they of equal volume when the prism is generalized?

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