This square-based pyramid, like most pyramids, has been thought to have just four triangular faces. However, in a surprising turn, recent studies have shown that the one of the Seven Wonders of ...

The number of edges of a pyramid is twice the number of edges of the base. A triangle-based pyramid has six edges, 3 × 2 = 6. A square-based pyramid has eight edges, 4 × 2 = 8 ...

The most common pyramids are square-based, rectangular-based and triangular-based pyramids. The surface area of a pyramid can be calculated by adding the area of the base to the sum of the areas ...