supplementary angles

[ sŭp′lə-mĕntə-rē ]

  1. Two angles whose sum is 180°.

Words Nearby supplementary angles

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

How to use supplementary angles in a sentence

  • It may be noted that ∠P2CP1, being made up of halves of two supplementary angles, is a right angle.

    The Teaching of Geometry | David Eugene Smith