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Complementary Angles
Two angles that add up to 90°.
Adjacent complementary angles form a right angle.
The complement of an angle is what needs to be added to an
angle to get 90°.
For example, the complement of 20° is 70° ( since 20° + 70°
= 90° ).…read more

Slide 3

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Supplementary Angles
Two angles that add up to 180°.
Adjacent supplementary angles form a straight angle.
The supplement of an angle is what needs to be added to an
angle to get 180°.
For example, the supplement of 20° is 160° ( since 20° + 160°
= 180° ).…read more

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