Answer:
C, B, A
Explanation:
From smallest to largest, the side lengths are ...
- AB = c = m -2
- AC = b = m
- BC = a = m +4
The shortest side is opposite the smallest angle, so the angles, smallest to largest, are C, B, A.
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Comment on side naming
Side c is opposite vertex (and angle) C, so is between vertices A and B. Thus the names AB and c are both names for the side of the triangle opposite angle C.