To prove:ABCD is a parallelogram

Explanation of Solution
Given information:The following information has been given
Formula used:any quadrilateral with two parallel and equal sides is known as parallelogram
Proof:We know that if
Lines AB and CD are parallel
Thus, we can also say that
Now, in
Thus, we can say that
Thus, now we can say that
Hence, using that
Also, AB and CD are found to be parallel
Thus, we can now say that the ABCD is parallelogram.
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