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What is a requirement of complementary angles?

Complementary angles must be adjacent.
Complementary angles must be vertical.
The measures of complementary angles must add up to 90°.
The measures of complementary angles must add up to 180°.

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ashley5577

Answer:

must add up to 90°

Step-by-step explanation:

they don't have to be touching

Answer:

The measures of complementary angles must add up to 90°.

Step-by-step explanation:

got it right on a test.

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