Question

3. Two adjacent angles on a straight line are in the ratio 5: 4. then find the measure of each one of
these angles.
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Answer 1

Answer:

Correct option is

A

80

The adjacent angles on a straight line are in the ratio of 5:4.

Let the adjacent angles be 5x and 4x.

Now, 5x+4x=180

o

...{ Since adjacent angles on a straight line =180

o

}

⇒9x=180

⇒x=

9

180

⇒x=20

The adjacent angles are as follows:

5x=5×20=100

o

& 4x=4×20=80

o

.

Answer 2

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