Answers

2016-04-11T21:16:41+05:30
In parallelogram ABPQ, 
AB = PQ   & AB║PQ   (Since opposite sides of parallelogram are equal) -equation(1)

In parallelogram ABCD,
AB = DC   & AB║DC   (Opposite sides of parallelogram are equal) - equation(2)

∴ From eq.(1) & (2)
PQ = DC   & PQ║DC

Hence, PQDC is a parallelogram.


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