two adjacent angles of a parallelogram are 3x-4degree 3x+16degree find the value of x hence find the measure of each of its angles
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Adjacent angle of a parallelogram are supplementary. So,
3x-4+3x+16=180
6x+12=180
x+2=30
x=28
The angles are = 3 (28)-4 = 80
3(28)+16=100
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