Question 707556
An angle measuring 100 degrees would be supplementary to any angle measuring 80 degrees, but it cannot be called supplementary by itself.
"Complementary" and "supplementary" are terms that describe the relationship between two angles.
They are comparative words like "larger."
Those words are not applied to an angle by itself, unless it is understood what other angle it is being compared to.
 
Two angles are called supplementary (to each other) if they add up to 180 degrees.
 
Two angles are called complementary (to each other) if they add up to a right angle (90 degrees).
Unless you are older than I think, and your teacher has talked about negative angles, there is no angle that can be complementary with a 100 degree angle.