Question

Work out the size of the angle marked x

Give a reason for your answer to question 8

Answer 1

30°

Explanation:

180°-150°=30°

a straight line is always equal to 180°

since we know that and we have the 150° given , all we have to do is to subtract 150 to 180 which is 30

Answer 2

30°

Explanation:

x + 150° = 180°

(Linear pair angles)

x = 18.° - 150°

x = 30°

Reason: Linear pair angles