Quadrilateral RSTU is a parallelogram. What other information would allow you to prove that RSTU is a rectangle? A. Opposite angles are congruent. B. Opposite sides are congruent. C. The diagonals bisect the angles. D. The diagonals are congruent.
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This means that opposite sides are parallel and congruent. So, option B (opposite sides are congruent) is already given. Show more…
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