Complementary

Com`ple*men"ta*ry, n. [See Complimentary.] One skilled in compliments. [Obs.] B. Jonson.

Com`ple*men"ta*ry (?), a. Serving to fill out or to complete; as, complementary numbers.

Complementary colors. See under Color. -- Complementary angles (Math.), two angles whose sum is 90°.