Step-by-step explanation:
8. ∠COB and ∠AOD are vertical angles or C
9. Vertical angles are equivalent to each other so 4x-16 = 112°
4x - 16 = 112°
4x - 16 + 16 = 112 + 16
4x = 128
4x/4 = 128/4
x= 32° or D
10. ∠AOC is vertical to ∠DOB therefore the 2 angles are congruent
You can do 360 - (112 + 112) = 2AOC
360 - 224 = 2AOC
136 = 2AOC
AOC = 68°or A
OR
You could just do 180 -112
Since ∠AOD and ∠AOC are supplementary angles, they both add up to 180°
We already know the measure of ∠AOD, it's 112°
So all you would need to do is subtract 112 from 180
And you get 68° or A
I REALLY hope this helps!!!
