Theorem 8.4 : In a parallelogram, opposite angles are equal.

Theorem 8.2 : In a parallelogram, opposite sides are equal.

In a parallelogram opposite sides are equal

Prove: In a parallelogram, opposite sides are equal.

Prove that In a parallelogram, opposite side are equal

The converse of the above properties are also true i.e.(i) A quadrilateral is a parallelogram if its opposite sides are equal.(ii)A quadrilateral is a parallelogram if its opposite angles are equal.(iii) A quadrilateral is a parallelogram if it has one pair of opposite sides parallel and equal.(iv) A quadrilateral is a parallelogram if its diagonals bisect each other .

Prove that In a parallelogram,opposite side are equal

A quadrilateral is parallelogram if its opposite angles are equal.

A quadrilateral is parallelogram if its opposite angles are equal.

Which of the following statements are true (T) and which are false (F)? In a parallelogram, the diagonals are equal. In a parallelogram, the diagonals bisect each other. In a parallelogram, the diagonals intersect each other at right angles. In any quadrilateral, if a pair of opposite sides is equal, it is a parallelogram. If all the angles of a quadrilateral are equal, it is a parallelogram. If three sides of a quadrilateral are equa, it is a parallelogram. If three angles of a quadrilateral are equal, it is a parallelogram. If all the sides of a quadrilateral are equal it is a parallelogram

A quadrilateral is a parallelogram if its opposite sides are equal.