two adjacent angles of a parallelogram are in ratio 2: 3 . the measure of the smaller angle is 1) 108 2) 72 3) 40 4) 36
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Answer:72
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Let the angles be 2x and 3x .
We know that sum of adjacent angles of a parallelogram is 180 .
2x + 3x = 180
5x = 180
x = 180 / 5
x = 36
First angle = 2x = 72
Second angle = 3x = 108
Hence , the measure of smaller angle is 72 .
Option (b) is correct .
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