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Pairs of angles
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Special Name
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Definition
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Examples
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Complementary angles
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Two angles whose measures have a sum of 90
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Supplementary angles
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Two angles whose measures have a sum of 180
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The measure of an angle is 76°. What is the measure of a complementary angle?
Since the angles are complementary, their measures must add to 90°. Set up an equation and solve for n.
The measure of the complementary angle is 14°.
The measure of an angle is 94°. What is the measure of a supplementary angle?
Since the angles are supplementary, their measures must add to 180°. Set up an equation and solve for n.
The measure of the supplementary angle is 86°.
The measure of an angle is 87 °. What is the measure of a complementary angle?
