Word.ws English Dictionary

complementary angles

complementary angles is the plural of complementary angle.

Meaning of complementary angle

Noun

complementary angle (plural complementary angles)

  1. An angle that, when added to another referenced angle, produces a right angle.
    • Angle A is 40°, and its complementary angle, B, is 50°.

Noun

complementary angles pl (plural only)

  1. (plural, plural-only) A pair of angles that sum to a right angle.
    • A = 30° and A′ = 60°, so A and A′ are complementary angles.

Origin of complementary angles

Complementary in the sense of completing, i.e. they form a complete right angle.

Questions about complementary angles

What does complementary angles mean?
Complementary angles means a pair of angles that sum to a right angle.
What is complementary angles the plural of?
Complementary angles is the plural of complementary angle.
What part of speech is complementary angles?
Complementary angles is a noun.

Words near complementary angles in the dictionary

  1. complementarities
  2. complementarity
  3. complementary
  4. complementary allophone
  5. complementary angle
  6. complementary angles
  7. complementary antonym
  8. complementary antonyms
  9. complementary color
  10. complementary colors
  11. complementary colour

Source and license

Adapted from Wiktionary: complementary angles (page history and authors); complementary angle (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “complementary angles.” Word.ws, https://word.ws/complementary_angles. Based on Wiktionary, CC BY-SA 4.0.