Answer:
b
Step-by-step explanation:
I think she made a mistake at step 4 because I know in order to find the mean absolute deviation of a number you must divide as the last step, not subtract and the rest of her work looks correct.
∠FEK and ∠HKI
Vertical angles are angles that are the same size and directly opposite each other
hope this helps
It would be answer B because the angles are next to each other/sharing a side but not overlapping each other in any way.