SOLUTION: I want to know what will i do to prove that quadrilateral is a parallelogram. what operation will i do?

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Question 109515: I want to know what will i do to prove that quadrilateral is a parallelogram.
what operation will i do?

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Show that opposite sides have the same slope.
If they do, they are parallel.
Cheers,
Stan H.

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