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- Geometric shape made of a rectangular base and four triangular faces. The volume of a pyramid is l*w*h/3, where l and h are the length and width of the base and h the height from the base to the apex (the point where the faces meet).
- In Ancient Egypt, huge pyramids made of rocks were used as tomb?s for pharaohs. The Great Pyramid of Giza is one of the Seven Wonders of the World.
- Concept album by the Alan Parsons Project, released in 1978.