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Two angles whose sum is 180 degrees are called supplementary angles. When two angles are supplementary, it means that the sum of their measures equals 180 degrees. This relationship is often used in geometry to solve for unknown angles or to identify complementary angles.

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4mo ago

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Angles that add up to 180 degrees are called supplementary angles.

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Wiki User

7y ago
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They are called supplementary angles, and when adjacent equal a straight line.

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Wiki User

7y ago
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Q: What are two angles called whose sum is 180 degrees?
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