Pyramid
A pyramid is a shape. It has triangular sides that come together in a point at the top, call the "apex". A pyramid with a square base (bottom) and four sides is called a square pyramid. A pyramid with a triangular base and three sides is called a tetrahedron.
[change] Famous pyramids
There are famous buildings with a pyramid shape around the world. In Egypt (a country in north Africa), kings and queens called pharaohs were buried in very large square pyramids built of stone. The largest of these huge buildings is the Great Pyramid of Giza near Cairo. It was built by the pharoh Khafra from the Ancient Egyptian Old Kingdom. The other pyramids were built by Menkaura and Khufu (both from the Old Kingdom). The ancient Greeks called it one of the seven wonders of the ancient world.
There are also ancient pyramids in Africa, Nubia, Central America, Greece, Rome, North America, France, China and Europe.
There is a famous modern glass pyramid in front of the Louvre Museum in Paris. The Luxor Hotel, in Las Vegas, Nevada is also a glass pyramid.
