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Mathematics, 30.06.2019 22:00 erika6072

Ab = 2x + 20 ad = 3x + 23 bc = 3 - x cd = 4x + 30 quadrilateral abcd is a parallelogram if one pair of opposite sides is both equal and parallel. prove that quadrilateral abcd is a parallelogram by finding the value of x.

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Ab = 2x + 20 ad = 3x + 23 bc = 3 - x cd = 4x + 30 quadrilateral abcd is a parallelogram if one pair...
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