AFOQT Practice Test

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What is the definition of supplementary angles?

  1. Two angles whose sum is 90 degrees

  2. Two angles whose sum is 180 degrees

  3. Two angles that share a common vertex

  4. Two angles that are adjacent to each other

The correct answer is: Two angles whose sum is 180 degrees

The correct definition of supplementary angles is that they are two angles whose sum is 180 degrees. This means that when you add the measures of these two angles together, the total will equal 180 degrees, which is essential in various geometric and practical applications, such as in the context of straight lines or on a flat plane. Supplementary angles do not have to be adjacent or share a common vertex, which distinguishes them from other types of angle relationships. The concept is frequently applied in numerous mathematical problems and real-world scenarios where angles are involved, and understanding this definition is fundamental in geometry.

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