Pyramid

A pyramid is a three-dimensional geometric shape with a polygonal base and triangular sides that meet at a common point called the apex. The base can be any polygon, such as a square or triangle, and the sides are triangular faces. Pyramids are known for their stable structure, with a wide base tapering to a point. They are often used in architecture, like ancient Egyptian pyramids, and are studied in geometry for their unique properties, including surface area and volume calculations.