The sum of two opposite angles of a parallelogram is 130°. Find all the angles of the parallelogram.
Let one of the adjacent angle ∠A = 130°
Therfore other adjacent angle ∠B = x°
Sum of adjacent angles = 180°
∠B = 
∠A = ∠C = 130° and ∠D = ∠B =70° [Measure of opposite angles of a parallelogram are equal]
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