Question

Angles L and M are supplementary. What is the sum of their measures? The sum of the measures of angles L and M is

Answer 1

Supplementary angles, when added, = 180 degrees

Answer 2

Supplementary angles will always add up to 180. If you had a straight line, and you drew another line across that line, the two angles on either side of that line would add up to 180 because a flat line is equal to 180 degrees.