Question

9. If L 1 equals 120 then what is the measure of its supplement <2=

Answer 1

Supplementary angles are angles whose addition sums up to 180 degrees.

Therefore, if angle 1 measures 120, then its supplement which is angle 2, must mean both add up to 180.

Hence, you have

Angle 1 + Angle 2 = 180

120 + Angle 2 = 180

Subtract 120 from both sides of the equation

Angle 2 = 180 - 120

Angle 2 = 60 degrees

By definiton, two angles are complimentary angles if they both add up to 90 degrees. Hence if angle L5 equals 50 degrees, then its compliment would be derived as 90 - 50 which equals 40. The compliment of angle L5 which is 50 degrees, equals 40 degrees.