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Mathematics 16 Online
OpenStudy (anonymous):

what is a supplementary angle?

OpenStudy (anonymous):

supplementary angles are angles that, when added, equal 180º. FOr instance, a 50º angle and a 130º angle.

Directrix (directrix):

Note: If the exterior sides of 2 adjacent angles form a line, the two angles are supplementary.

OpenStudy (anonymous):

Supplementary angles are two angles that add up to 180

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