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Supplementary and Complementary Angle Pairs

Find missing angle measures for supplementary or complementary angles.

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Supplementary and Complementary Angle Pairs

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Acute Angle

An acute angle is an angle with a measure of less than 90 degrees.

Angle Pairs

An angle pair is composed of two angles whose sum may add up to 180 degrees or 90 degrees.


A degree is a unit for measuring angles in a circle. There are 360 degrees in a circle.

Riemann sum

A Riemann sum is an approximation of the area under a curve, calculated by dividing the region up into shapes that approximate the space.

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