Officer Aptitude Rating (OAR) Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What do complementary angles add up to?

90 degrees

Complementary angles are defined as two angles that sum up to 90 degrees. This means if you have one angle, the other angle that complements it will be what is needed to reach that total of 90 degrees. For example, if one angle measures 30 degrees, the complementary angle will be 60 degrees, since 30 + 60 = 90.

The other options pertain to different relationships between angles: angles that add up to 180 degrees are called supplementary, and those that sum to 360 degrees complete a full circle. An angle of 45 degrees does not relate to the definition of complementary angles as it represents a single angle measurement rather than a pair. Understanding these distinctions helps clarify the nature of angles and their classifications based on their sums.

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180 degrees

360 degrees

45 degrees

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