Pyramid

A pyramid is a three-dimensional geometric shape that has a polygon as its base and triangular faces that meet at a common point called the apex. The base of the pyramid can be any polygon, but the most common types are square pyramids (with a square base) and triangular pyramids (with a triangular base).

The height of a pyramid is the perpendicular distance from the base to the apex. To find the surface area of a pyramid, you can use the formula:
Surface Area = Base Area + (1/2) * Perimeter of Base * Slant Height

The volume of a pyramid can be calculated using the formula:
Volume = (1/3) * Base Area * Height

Pyramids have been used in architecture for thousands of years, and they are often associated with ancient civilizations such as the Egyptians and the Mayans.