Posted by **Kate** on Sunday, March 6, 2011 at 5:52pm.

Quadrilateral QRST has two pairs of congruent sides, but it is not a parallelogram. What figure is it? What further condition would it have to satisfy to be a parallelogram?

A. The figure is a square. To be a parallelogram, it would have to have pairs of opposite congruent sides, not just congruent sides.

B. The figure is a rectangle. To be a parallelogram, it would have to have pairs of opposite congruent angles, not just congruent sides.

C. The figure is a kite. To be a parallelogram, it would have to have pairs of opposite congruent sides, not just congruent sides.

D. The figure is a square. To be a parallelogram, it would have to have pairs of opposite congruent angles, not just congruent sides.

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