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A parallelogram has equal, perpendicular diagonals. Give the most specific classification.

AIt is a parallelogram
BIt is a rectangle
CIt is a square
DIt is a rhombus
Answer & Solution
Correct answer: C. It is a square
With mutual bisection already supplied by the parallelogram, equal diagonals make it a rectangle and perpendicular diagonals make it a rhombus. It is therefore a square.
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