Question

10

Find the value of x.
11
9.
10.
12.
*°
910
1189
11.
12.
4x - 15)
(x - 30)
115°
145°

Answer 1

9) x = 89°

10) x = 118°

11) x = 145°

12) x = 40°

Explanation:

9) 180-91 = 89

10) x = 118° because it is alternate interior to 118

11) x-30 = 115, x = 145

12) 4x-15 = 145, 4x = 160, x = 40