equilateral triangle

noun

A triangle having all three sides equal.

“Holonym: deltahedron”

Similar
equiangular triangle
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Meanings

nounequilateral triangle (plural equilateral triangles)

plural equilateral triangles

  1. geometryA triangle having all three sides equal.

    Holonym: deltahedron

Synonyms & antonyms

nouna three-sided regular polygon

Similar
equiangular triangle
Broader
triangletrigontrilateralregular polygon

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Chinese Mandarin 等边三角形
  • 等边三角形 (Děng biān sānjiǎoxíng)type of triangle
Danish ligesidet trekant
  • ligesidet trekanttype of triangle
Dutch gelijkzijdige driehoek
  • gelijkzijdige driehoektype of triangle
Estonian võrdkülgne kolmnurk
  • võrdkülgne kolmnurktype of triangle
Finnish tasasivuinen kolmio
  • tasasivuinen kolmiotype of triangle
French triangle équilatéral
  • triangle équilatéraltype of triangle
German gleichseitiges Dreieck
  • gleichseitiges Dreiecktype of triangle
Hungarian egyenlő oldalú háromszög, szabályos háromszög
  • egyenlő oldalú háromszögtype of triangle
  • szabályos háromszögtype of triangle
Italian triangolo equilater
  • triangolo equilatertype of triangle
Japanese 正三角形
  • 正三角形 (seisankakukei)type of triangle
Māori tapatoru rite
  • tapatoru ritetype of triangle
Polish trójkąt równoboczny
  • trójkąt równobocznytype of triangle
Portuguese triângulo equilátero
  • triângulo equiláterotype of triangle
Russian равносторо́нний треуго́льник
  • равносторо́нний треуго́льник (ravnostorónnij treugólʹnik)type of triangle
Spanish triángulo equilátero
  • triángulo equiláterotype of triangle
Swedish liksidig triangel
  • liksidig triangeltype of triangle
Tagalog parigiliring tatsiha
  • parigiliring tatsihatype of triangle
Thai สามเหลี่ยมด้านเท่า
  • สามเหลี่ยมด้านเท่า (sǎam-lìiam-dâan-tâo)type of triangle
Vietnamese tam giác đều
  • tam giác đềutype of triangle
Welsh triongl hafalochrog
  • triongl hafalochrogtype of triangle
Cite this entry
APA

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

MLA

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

Chicago

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

Source: equilateral triangle on Wiktionary, CC BY-SA 4.0.