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pointy
they are the same because, they both have rectangular bases. Rectangular prisms are rectangular from the top and bottom (they are flat) while a rectangular pyramid has a point on the top where all of the edges meet. A pyramid has a tip at the top which unables it to stand on the tip while prisms can anyways.
A Rectangular pyramid has a base of 4 points, and they lead up to the top point, like a triangle. A rectangular prism has a base of 4, the sides have 4 and the top as well, like a box.
A triangular prism has a uniformed cross-section whereas a rectangular pyramid does not.
It is a rectangular based pyramid