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fieryanswererft

Yes, its a rectangle because it has one right angle. A rectangle is a shape having all sides 90° and pair of two opposite same sides.

gracieh6363
Answer: Yes
Because ABCD is a parallelogram, its opposite sides are equal. (matching angles of congruent triangles). DCB = 90o. Hence ABCD is rectangle, because it is parallelogram with one right angle.