Question

An angle measures 102° less than the measure of a supplementary angle. what is the measure of each angle?

Answer 1

A supplementary angle is equal to two angles that sum is 180.so less is a key word which means to subtract in this case so 180-102 = 78°

Answer 2

The angle measures 78 as 180-102 is 78 (180 is the degree of a supplementary angle)