2. Amy was asked to find mABC in the picture. Her work is shown below.
The alternate interior angles are congruent when the lines
are paralled so
mLABC-3(27)-47
-81-47
-34°
30-47-n+7
-47
+47
3n-+54
-n-h
20-54
2
n=27
Explain Amy's mistake
A
(3n-47)
(n+7)
B
D
Show all work to find the correct mABC.