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Geometry · G-CO

Angle Pairs — Supplementary, Complementary, Vertical

Supplementary angles sum to 180°; complementary to 90°; vertical angles are equal.

GeometryCommon Core HSG-CO.A.1G-COVerified correct ✓

Worked examples

Two angles are supplementary. One angle measures 58°. What is the measure of the other angle?
Answer: 122
Two angles are supplementary. One angle measures 128°. What is the measure of the other angle?
Answer: 52

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