SOLUTION: how do you prove that ABCD is a parallelogram?

SOLUTION: how do you prove that ABCD is a parallelogram?

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Question 412808: how do you prove that ABCD is a parallelogram?
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Prove that both pairs of opposite sides are parallel, or prove that the opposite angles are congruent to each other, etc...
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