Because that's one of the specifications in the definition of a rectangle. If it doesn't have
exactly four sides, then it doesn't satisfy the definition, and we don't call it a rectangle.
Your question is like asking: Why is a long-haired person a woman ?
I had to clean that up a lot, but I hope there's enough of it left to demonstrate my point.
Chat with our AI personalities
Rectangles must always have 4 sides. As there are two rectangles, there must be 8 sides. However, if these two rectangles have identical sized sides and they are placed against each other so that they look like one rectangle, there will only be 4 sides.
Well, squares do have equal sides but rectangles have two pairs of equal sides
A rectangle is a quadrilateral that has four sides.
squares rectangles.
Providing they are not contiguous there are 16