Q4Short answer
sides of equal length. Rectangle A rectangle is a parallelogram with 4 right angles. Square A square is a parallelogram with 4 sides of equal length and 4 right angles.
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(1) 6 (2) 1 (3) -1 (4) (5) 60 2 7 7 4 (6) -5 (7) - (8) 4 (9) 5 (10) 42 5 5