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Mathematics, 21.05.2021 17:40 IsabellaGracie

A quadrilateral must be a parallelogram if (1) one pair of sides is parallel and one pair of angles is congruent
(2) one pair of sides is congruent and one pair of angles is congruent
(3) one pair of sides is both parallel and congruent
(4) the diagonals are congruent

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