Q. 115.0( 4 Votes )
In a parallelogram ABCD, ∠D= 135°, determine the measure of ∠A and∠B.
Let one of the adjacent angle ∠D = 135°
Therfore other adjacent angle ∠A = x°
Sum of adjacent angles = 180°
∠A = ∠C =45° and ∠D = ∠B =135° [Measure of opposite angles of a parallelogram are equal]
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