A quadrilateral with 4 right angles is called a?

Answer 1

A rectangle is a parallelogram that has 4 right angles. If all the sides are equal, it is a square because a square is also a parallelogram with 4 equal sides/right angles.

A square is essentially an instance of a rectangle

Answer 2

A quadrilateral containing 4 right angles is called a rectangle. opposite sides will necessarily be parallel and equal in length. In the special case where all four sides are equal in length, the figure will be a square.

Answer 3

Either square or parallelogram fit this description.