Which of the following are measures of supplementary angles?

A. 109° and 71° B. 63° and 27° C. 81° and 90° D. 19° and 26°

Okay. So complimentary angles mean two angles that equal 90 degrees. Supplementary angles mean two angles that equal 180 degrees. So just by looking at this question, B and D can be crossed out. A and C remain, but the sum of the angles in C equal 171 and the sum of angles in A equals 180. The answer to this question is A.