To determine if angles A and B are supplementary, we need to check if their measures add up to 180 degrees.
Given: m∠A = 98° m∠B = 88°
Now, let's add the measures of the angles: 98° + 88° = 186°
Since 186° is not equal to 180°, the angles do not add up to 180 degrees.
The correct answer is: No, they do not add up to 180°.