Answer:
The sum of the measures of angles L and M is 180 degrees.
Step-by-step explanation:
Consider the provided information.
Angles L and M are supplementary.
The sum of Supplementary angles are equal to 180 degree.
Here it is given that angle L and angle M are supplementary.
That means the sum of angles L and M should be 180 degree.
Hence, the sum of their measures is 180 degrees
