QRST is a rectangle. Select the statements used to prove that its diagonals are congruent. Select two. T S Q U Opposite sides of a parallelogram are congruent AQRT AQRS by the angle-side-angle criterion AQRT ARQS by the side-angle-side criterion Adjacent sides of a parallelogram are congruent AQRTARST by the side-angle-side criterion R