A quadrilateral is a parallelogram if both pairs of sides are A quadrilateral is a parallelogram if both pairs of angles are A quadrilaterai is a parailelogram if both pairs of angies are A quadrilateral is a parallelogram if the bisect each other. A quadrilateral is a parallelogram if each divides a paralielogram into two A quadrilateral is a parallelogram if one pair of opposite sides are both and
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