How many sides does a pyramid have?

A pyramid can have an infinite number of sides other than two. If it has one (or an infinite number of) side(s), it is considered a cone. If it is, for example, a hexagonal pyramid, it will have six sides. A triangle-based pyramid has three sides. A square-based pyramid, commonly the structure used by ancient Egyptians, has four sides. There can be pentagonal pyramids, hexagonal pyramids and so on.