When a right rectangular pyramid is sliced horizontally by a plane parallel to the base, the cross-section created by that slice will be a smaller rectangle. This smaller rectangle will be similar to the base of the pyramid, maintaining the same proportions but reduced in size. The dimensions of the rectangle will depend on the height at which the pyramid is sliced.
a right rectangular pyramid is sliced horizontally (across) at the red line by a plane parallel o the base of the pyramid. What is the shape of the cross section?
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