A pyramid is a structure whose outer surfaces are triangular. Converge to a single point at the top making the shape roughly a pyramid in the geometric sense. The base of a pyramid can be trilateral, quadrilateral, or any polygon shape. Pyramid is a place that has its history. Those pyramids are so mysterious. They had done it by helping each other. It was made by millions of people. It was created perfectly. Someday I want to be there to see those beautiful pyramids. I love pyramids.