1.

In this figure, AOB is a straight line. Find x and also the measure of each angle ​

Answer»

ANSWER:

(x-9) + (5x+3)=180     (LINEAR pairs)

x-9+5x+3=180

6x = 180 + 9 - 3

6x= 186

x=31

Angle AOB= x-9= 31 - 9= 22

Angle COB= 5x + 3= 157



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