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
British Dictionary definitions for supplementary angles
Scientific definitions for supplementary angles
supplementary angles
[ sŭp′lə-mĕn′tə-rē ]
Two angles whose sum is 180°.