Question

Find the value of y in each of the following figure if a || b

Answer 1

Answer:

1)120 + y= 180. (because its adjacent ang. is equal to alternate int. angle since a\\b)

=>y = 180- 120=60

2)2y+ y = 180. ( sum of same side int. ang. is equal to 180)

=>3y= 180

=>y= 180/3=60

therefore, 2y = 120

y= 60

3)figure is incomplete :(