One of the most fascinating structures ever built by man is the pyramid. Basically, a pyramid is a triangular building which has outer surfaces that converge at a single point. Its base is usually quadrilateral or trilateral, although it can also be polygonal in certain cases. The normal design of a pyramid has its weight closer to the base or the ground, which means that there is less material used in the structure as it goes higher. As most research papers or term papers about pyramids will tell, these buildings were the largest structures in the world, until modern skyscrapers and buildings were built. online slots
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