Question

Determine the value of x. Question 18 options:

120°

60°

30°

240°

Answer 1

Explanation:

the outer angle (x) is half of the difference between the outer arc angle and the inner arc angle.

the inner arc angle is 120°.

so, the outer arc angle is 360 - 120 = 240°.

x = ½(240 - 120) = ½ × 120 = 60°