complementary angle
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Related to complementary angle: Pythagorean theorem, Coterminal angles
complementary angle
[‚käm·plə′men·trē ′aŋ·gəl] (mathematics)
One of a pair of angles whose sum is 90°.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.