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In parallelogram ABCD, angle $A = 3 x$ and angle $B = 2 x + 20$ (adjacent angles). Find angle A (in degrees).

Class 8Properties of ParallelogramsQuadrilaterals

A192
B86
C106
D96

Step-by-Step Solution

Adjacent angles sum to 180:

3 x + 2 x + 20 = 180, 5 x = 160, x = 32

. Angle

A = 3 x = 96

deg.

Answer: D) 96

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