supplementary angles

noun

A pair of angles that sum to 180 degrees.

“A = 30° and A′ = 150°, so A and A′ are supplementary angles.”

Meanings

noun
  1. pluralgeometryplural of supplementary angle

    Let angle A = 30° and angle B = 10°, so that their supplementary angles are A′ = 150° and B′ = 170°, respectively.

nounsupplementary angles pl (plural only)
  1. pluralplural onlygeometryA pair of angles that sum to 180 degrees.

    A = 30° and A′ = 150°, so A and A′ are supplementary angles.

Translations

Catalan angles suplementaris
  • angles suplementarispair of angles
Chinese Mandarin 補角 /补角
  • 補角 /补角 (bǔjiǎo)pair of angles
Estonian kõrvunurgad
  • kõrvunurgadpair of angles
Finnish suplementtikulmat
  • suplementtikulmatpair of angles
French angles supplémentaires
  • angles supplémentairespair of angles
German Nebenwinkel
  • Nebenwinkelpair of angles
Greek παραπληρωματικές γωνίες
  • παραπληρωματικές γωνίες (parapliromatikés goníes)pair of angles
Hungarian kiegészítő szög
  • kiegészítő szögpair of angles
Italian angoli supplementari
  • angoli supplementaripair of angles
Japanese 補角
  • 補角 (hokaku)pair of angles
Latvian blakusleņķi
  • blakusleņķipair of angles
Māori koki whakarārangi
  • koki whakarārangipair of angles
Polish kąty przyległe
  • kąty przyległepair of angles
Portuguese ângulos suplementares
  • ângulos suplementarespair of angles
Slovak vedľajšie uhly, susedné uhly
  • vedľajšie uhlypair of angles
  • susedné uhlypair of angles
Spanish ángulos suplementarios
  • ángulos suplementariospair of angles
Tagalog sihang kaladlad
  • sihang kaladladpair of angles
Ukrainian суміжні кути
  • суміжні кути (sumižni kuty)pair of angles
Cite this entry
APA

supplementary angles. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/supplementary%20angles

MLA

“supplementary angles.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/supplementary%20angles. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “supplementary angles,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/supplementary%20angles.

Source: supplementary angles on Wiktionary, CC BY-SA 4.0.