To determine if angles A and B are supplementary, we need to check if their measures add up to 180°.
Given:
- m∠A = 53°
- m∠B = 127°
Now, let's add them together:
53° + 127° = 180°.
Since the angles add up to 180°, they are supplementary.
Therefore, the correct response is:
Yes, they are a supplementary pair.