Answer:
should be 89 since it's directly across
A=B
Hence A+81=C
Now let's rearrange:
3A=99
So A= 33
B=33
and C = 33+81= 114
Give brainlist
216
Step-by-step explanation:
We know that the two angles must add up to 180
so
108+x/3=180
solve for x
72=x/3
x=216