Cavalieri's Principle
These two pyramids have the same height and congruent bases.
If we imagine them constructed of stacks of paper triangles, we can reconfigure the triangles of the pyramid on the left so it becomes the same as the pyramid on the right. This idea is based on Cavalieri's Principle: Two objects with the same heigth and the same cross-sectional areas have the same volume.
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Date last modified: April 10, 2009.