9
QuizMultiple Choice

Area of a Circle — Unit test

Question 9 • *Integrated Math II Full

Which statement is true about two angles that are complementary?

Answer
A
The angles share a common ray.
B
The sum of the measures of the two angles is 90°.
C
The angles are opposite each other.
D
The sum of the measures of the two angles is 180°.

Explanation

Complementary angles are two angles whose measures add up to 90°. For example, angles measuring 30° and 60° are complementary because 30° + 60° = 90°. They do not have to share a ray or be opposite each other; a sum of 180° describes supplementary angles.

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