Question

Q3) Find the value of x in following figure:
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Answer 1

Answer:

B=40°

Step-by-step explanation:

A=80°

B=x

C=180°-120°=60°

a+b+c=180°

80°+x+60°=180°

x+140°=180°

x=180°-140°

x=40°

Answer 2

Step-by-step explanation:

120+C=180. angles in linear pair

C=180-120

C=60

A+B+C=180. sum of all angles of triangle is. supplementary

80+x+60=180

140+x=180

x=180-140

x=40

hope you get the best