Question

Can anyone solve this for me?

Answer 1

∠ 1 =
`(1)/(2)` (a + b)

Explanation:

the chord- chord angle 1 is half the sum of the measures of the arcs intercepted by the angle and its vertical angle

∠ 2 is the vertical angle , so

∠ 1 =
`(1)/(2)` (a + b)