Answer:
either of two angles whose sum is 180°.
Step-by-step explanation:
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
Answer:
The answer is 90 degrees. Have a good day!
Step-by-step explanation:
A = 9 (Sorry I can't do the other ones, I haven't learned those ones yet) Hope this helps!! :P