Which figure must be a square?



A.
a parallelogram with four congruent sides





B.
a quadrilateral with four right angles





C.

a quadrilateral with congruent sides



D.
a rhombus with four right angles

Respuesta :

A is describing either a rectangle, rhombus, or square, so that's not it. B is the same, C is also a possible rhombus, and so D is the correct answer as a square.
4 right angels= A square, therefore D is correct.