Given that quadrilateral PQRS is a parallelogram, how can you prove that it is also a rectangle? A. Use the distance formula to find the length of both diagonals to see if they are congruent.
B. Find the slopes of all sides to determine if the angles are right angles.
C. Both A and B are valid.
D. None of these.

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the answer is false

step-by-step explanation:

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