[b]Cavalieri's Principle[/b][br]The volumes of two objects are equal if the areas of their corresponding cross-sections are equal in all cases.[br][br][b]Exercise[/b][br]Change the height h of the intersections for both pyramids.[br]Move point [math]S_2[/math] and make sure that the cross section areas of both pyramids are equal in all cases.[br]Show the plane intersecting the vertices of the pyramids.