-15.75 - (-12.76) find awnser

I think the correct answer is option B. The statement above is true and can be written as a biconditional as follows:

Angles are supplementary if (and only if) their measures sum to 180.

Two Angles are Supplementary when they add up to 180 degrees. They don't have to be next to each other, just so long as the total is 180 degrees. Hope this helps.