supplementary angles
[ sŭp′lə-mĕn′tə-rē ]
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
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