Supplementary angles

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A pair of angles are supplementary if their respective measures sum to 180 degrees.

If the two supplementary angles are adjacent (i.e. have a common vertex and share a side, but do not have any interior points in common) their non-shared sides form a line.

See also

• Complementary anglesmk:Суплементни агли

es:Ángulos suplementarios eo:Suplementoj