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Mathematics, 16.12.2019 19:31 robert7248

M∠ dab = 85 − 2x
m ∠ abc = 90 + x
m ∠ bcd = 80 − 3x
m ∠ cda = 105 + 4x
quadrilateral abcd is a parallelogram if pairs of consecutive angles are supplementary. prove that quadrilateral abcd is a parallelogram by finding the value of x.
a) x = −2
b) x = −5
c) x =
5
2
d) x = −
5
2

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You know the right answer?
M∠ dab = 85 − 2x
m ∠ abc = 90 + x
m ∠ bcd = 80 − 3x
m ∠ cda = 105 + 4x
quadr...
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