Answer:
8) 52
9) 52
10) 52
11) 128
12) 128
Step-by-step explanation:
8) <2 = <6 because of corresponding angles
9) <2 = <7 because of alternate exterior angles
10) <2 = <3 because of vertical angles
11) Supplementary angles
<5 = x
x + 52 = 180
x = 128
12) Supplementary angles
<4 = x
x + 52 = 180
x = 128
