Question

For each of the following find the size of the lettered angle, give a reason for your answer

Answer 1

Step-by-step explanation:

it is given that both lines are || to each other

120° + a = 180°. (( linear pair ))

a = 60°

a = b (( corresponding angle ))

a = 60°

b = 60°

b+c = 180°. (( linear pair))

60° + c = 180°

c = 120°

hence , a = 60° , b = 60° and c = 60°

Answer 2

Answer:

a - 60°

b - 60°

C - 120°

Step-by-step explanation:

120° + a = 180° [ Straight Angle ]

a = 60°

Similarly you can find b by co - exterior angle property and c by straight angle property .