Question Video: Identifying the Relation between Two Angles Mathematics • 7th Grade

Classify the pair of angles as complementary, supplementary, or neither.

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Video Transcript

Classify the pair of angles as complementary, supplementary, or neither.

If we have a look at the diagram, there are two angles. One is 101 degrees, and the other is 79 degrees. So let’s begin by recalling our definitions of complementary and supplementary angles. Angles which are complementary are those which add to give 90 degrees, and those that are supplementary will add to give 180 degrees. When we add up the angles of 101 and 79 degrees, we can easily see that this would give us 180 degrees. We can, therefore, give our answer that these pair of angles would be supplementary.

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