Question

When are two angles complementary?

Answer 1

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When are two angles complementary?

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Two angles are complementary when they add up to $\tt{90\textdegree}$.

For example:-

Angles whose measures are 60º and 30º are complementary because they add up to 90º.

Now, supplementary angles add up to $\tt{180\textdegree}$.

For example, angles whose measures are 140º and 40º are supplementary because they add up to 180º.

Good luck.

   

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Answer 2

Answer:

90 degree's

Step-by-step explanation:

Two angles are called complementary when their measures add to 90 degrees. Two angles are called supplementary when their measures add up to 180 degrees