The square-based pyramid, a shape which usually has four sides, is the most famous one at the Giza pyramid site. However ...

A square-based pyramid has eight edges, 4 × 2 = 8 Image caption, The formula 𝑬 = 𝑭 + 𝑽 – 2 works for pyramids because they are a type of polyhedron.

Pyramid Sometimes they have a triangular shaped base and sometimes they have square shaped bases. Everyday things that have the shape of a pyramid include rooftops, buildings and paperweights.

Cairo's Tahrir Square obelisk has its pyramid-shaped top installed. Nevine El-Aref, Wednesday 12 Feb 2020. The obelisk is around 19m tall and weighs 90 tones.