Question

prove with reason that in a parallelogram—(1)each diagonal divides it into congruent traingles; (2) the length of opposite sides are equal and (3) the opposite angles are equal in magnitude​

Answer 1

Answer:

The opposite angles of a parallelogram are equal (and conversely: if the opposite angles of a quadrilateral are equal, it is a parallelogram). The diagonals of a parallelogram bisect each other (and conversely: if the diagonals of a quadrilateral bisect each other, it is a parallelogram).