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Q.

In a parallelogram ABCD, angle A and angle B are in the ratio 1:2. Find the angle A.

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a

30°

b

45°

c

60°

d

90°

answer is C.

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Detailed Solution

As we know, the sum of adjacent angles of a parallelogram is equal to 180° and opposite angles are equal to each other.

Thus, in parallelogram ABCD angle A and angle B are adjacent to each other

Let angle A = x and angle B = 2x.

So, x + 2x = 180°

3x = 180°

x = 60°

So , angle A = 60°

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