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**Complementary angles**: Two angles are called Complementary angles if their sum is \(90°\).

Example:

The angle pair \(35°\) and \(55°\) are complementary, where the angle \(35°\) is said to complement the other angle \(55°\), and vice versa. The sum of the two angles \(35°\) and \(55°\) is \(90°\).

**Supplementary angles**: Two angles are called Supplementary angles if their sum is \(180°\).

Example:

The angle pair \(70°\) and \(110°\) are supplementary, where the angle \(70°\) is said to supplement the other angle \(110°\), and vice versa. The sum of the two angles \(70°\) and \(110°\) is \(180°\).