Select the measure of the complement or supplement of the angle. If there is no complement or supplement, select no complement or supplement.

55.1°

124.9°
119.9°
49.9°
no complement or supplement

3 answers

180 - 55.1 = 124.9

http://www.mathsisfun.com/geometry/supplementary-angles.html

OK, Thanks!

You're welcome.