Question

In a parallelogram ABCD, the ratio of angle A and angle B is 1 : 2. Then the measure of angle A is ________ degree.
60
45
30
90​

Answer 1

Answer:

answer is a)

Step-by-step explanation:

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Answer 2

Given : In a parallelogram ABCD, the ratio of angle A and angle B is 1 : 2.

To Find:  Then the measure of angle A is ________ degree.

60

45

30

90​  

Solution:

ratio of angle A and angle B is 1 : 2.

Let say   measure of angle A = x

Then measure of angle B = 2x

Sum of adjacent angles is 180°

x + 2x = 180°

=> 3x =  180°

=> x = 60°

measure of angle A is 60  degree.

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