supplementary angle

noun Mathematics.

either of two angles that added together produce an angle of 180°.
Compare complementary angle.

Origin of supplementary angle

First recorded in 1830–40

Words nearby supplementary angle

supplemental, supplemental air, supplemental plumage, supplemental security income, supplementary, supplementary angle, supplementary angles, supplementary story, supplementation, suppletion, suppletive

British Dictionary definitions for supplementary angle

supplementary angle

noun

either of two angles whose sum is 180° Compare complementary angle