The adjacent angles of a parallelogram are in ratio 7:5. find the measure of each of these angles.
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Sum of adjacent angles of a parallelogram is 180°.
7x+5x = 180°
12x = 180°
x = 180÷12
x = 15
7x = 7×15 = 105°
5x = 5×15 = 75°
The measures of these angles are : 105° , 75°
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