Question

li) To Prove that "The opposite sides of a parallelogram are of equal length"
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Answer 1

The opposite sides of a parallelogram are of equal length and the opposite angles of a parallelogram are also equal . A parallelogram is also a quadrilateral with two pairs of parallel sides

Answer 2

Answer:

Take a quad ABCD .so in a quadrilateral diagonal are equal and bisect each other.Mark point of intersection as O.

Step-by-step explanation:

1 In triangle AOB and COD. prove congruence rule by sas rule. Then AB =CD by cpct. Similarly take triangle AOD and BOC. prove sas and AD=BC. SO we can say that opposite side of a parallelogram are of equal length. Hence proved