Question

If the supplement of an angle is 110 degrees, then find its complement.

• A. 110 degrees
• B. 10 degrees
• C. 20 degrees
• D. 40 degrees

Answer 1

The correct option is C 20 degrees

The sum of two supplementary angles = 180 degrees

So, the measure of the angle whose supplement measures 110 degrees = (180-110) degrees = 70 degrees

The sum of two complementary angles = 90 degrees

So, the measure of the complement of the angle measuring 70 degrees = (90-70) degrees = 20 degrees