Two angles whose measures sum to 180 degrees are called what?

Two angles whose measures sum to 180 degrees are called what?

• A. End Behavior
• B. Similar
• C. Supplementary Angles
• D. Theorem

Answer: (C)

Supplementary angles are two angles whose measures add up to 180 degrees. This comes from a straight line forming a 180-degree angle, so whenever two angles together fill that straight line, their measures total 180. For example, if one angle is 110 degrees, the other must be 70 degrees. These angles don’t have to share a vertex; the sum condition alone defines them. The other terms don’t describe this idea: end behavior relates to graphs at extreme values, similar concerns similarity of shapes or angles, and a theorem is a proven statement.

Supplementary angles are two angles whose measures add up to 180 degrees. This comes from a straight line forming a 180-degree angle, so whenever two angles together fill that straight line, their measures total 180. For example, if one angle is 110 degrees, the other must be 70 degrees. These angles don’t have to share a vertex; the sum condition alone defines them. The other terms don’t describe this idea: end behavior relates to graphs at extreme values, similar concerns similarity of shapes or angles, and a theorem is a proven statement.