# What are supplementary and complementary angles? And how do I find the complement and supplement of an angle measure?

Two angles that add up to either 180* (supplementary) or 90* (complementary)

Note: I will be using the asterisk as a degrees sign.

A Supplementary Angle is and an angle that measure 180 (aka a stragight line) and a Complementary Angle is an angle that measures 90 (aka a right angle). When it says angleS it means the 2 or more angles that add up to either 180 (supplementary) or 90 (complementary).

For both scenarios, there can be multiple angles that add up to either 180 or 90 in which case you would just call them supplementary or complementary when they are referenced together. In an equation you would just add the other angle measures in to either equation accordingly.

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Supplementary angles are two angles whose measures sum up to 180 degrees. Complementary angles are two angles whose measures sum up to 90 degrees. To find the complement of an angle, subtract its measure from 90 degrees. To find the supplement of an angle, subtract its measure from 180 degrees.

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