The sum of the measures of two angles is 183.6°. One angle has a measure of 54°. What is m , the measure in degrees of the second angle?

m = 3.4°

m = 129.6°

m = 9,914.4°

m = 237.6°

m = 129.6°

To find the measure of the second angle, subtract the measure of the given angle from the sum of the measures of the two angles.

m = (Sum of the measures of the two angles) - (Measure of the given angle)

m = 183.6° - 54°

m = 129.6°

Therefore, the measure of the second angle is 129.6°.

So, the correct answer is m = 129.6°.