NEED HELP ASAP!!
1: Which choice can be used to confirm that a quadrilateral is a parallelogram?
A. A quadrilateral is a parallelogram if it has exactly one pair of congruent angles.
B. A quadrilateral is a parallelogram if it has exactly one pair of congruent sides.
C. A quadrilateral is a parallelogram if it has one pair of sides that are both congruent and parallel. D. A quadrilateral is a parallelogram if it has two angles that are supplementary.
2: Which choice can be used to confirm that a quadrilateral is a parallelogram?
A. A quadrilateral is a parallelogram if it has two angles that are supplementary.
B. A quadrilateral is a parallelogram if its opposite angles are congruent.
C. a quadrilateral is a parallelogram if it has two angles that are complementary.
D. A quadrilateral is a parallelogram if it has exactly one pair of congruent sides.