The formula 𝑬 = 𝑭 + 𝑽 – 2 works for pyramids because they are a type of polyhedron. For a triangle-based pyramid 𝑭 = 4, 𝑽 = 4 and 𝑬 = 6. 4 + 4 – 2 = 6.

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 ...