question:
The opposite angles of a parallelogram are (3x+5) and (61-x).Find the measures of four angles.
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Answer:
opposite angles of a parallelogram are equal and adjacent angles are supplementary.
(3x+5)° = (61-x)°
4 x = 56°
x = 14°
so the angles are : 3x+5 = 47°
and 180° - 47° = 133°
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