2. Which of the following statement(s) is/are correct? (a) Consecutive angles of a parallelogram are supplementary (b) If opposite angles of a quadrilateral are equal, then it is necessarily a parallelogram. (c) If three angles of a quadrilateral are equal, it is a parallelogram. (d) If three sides of a quadrilateral are equal, it is a parallelogram.
Solution (a) and (6)
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