Phrase guide

equilateral triangle

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

A triangle having all three sides equal.

Definition source: English Wiktionary via Wiktextract

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a three-sided regular polygon

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: equiangular triangle

Antonyms: none provided

Broader terms: regular polygon, triangle, trigon, trilateral

Narrower terms: delta

History

Etymology

No etymology was provided for this word.

Across languages

Translations

23 source translations are retained for this English entry.

  • Azerbaijani: düzgün üçbucaq — type of triangle
  • Azerbaijani: bərabərtərəfli üçbucaq — type of triangle
  • Chinese Mandarin: 等边三角形 (Děng biān sānjiǎoxíng) — type of triangle
  • Danish: ligesidet trekant — type of triangle
  • Dutch: gelijkzijdige driehoek — type of triangle
  • Estonian: võrdkülgne kolmnurk — type of triangle
  • Finnish: tasasivuinen kolmio — type of triangle
  • French: triangle équilatéral — type of triangle
  • German: gleichseitiges Dreieck — type of triangle
  • Hungarian: egyenlő oldalú háromszög — type of triangle
  • Hungarian: szabályos háromszög — type of triangle
  • Italian: triangolo equilater — type of triangle
  • Japanese: 正三角形 (seisankakukei) — type of triangle
  • Māori: tapatoru rite — type of triangle
  • Polish: trójkąt równoboczny — type of triangle
  • Portuguese: triângulo equilátero — type of triangle
  • Russian: равносторо́нний треуго́льник (ravnostorónnij treugólʹnik) — type of triangle
  • Spanish: triángulo equilátero — type of triangle
  • Swedish: liksidig triangel — type of triangle
  • Tagalog: parigiliring tatsiha — type of triangle
  • Thai: สามเหลี่ยมด้านเท่า (sǎam-lìiam-dâan-tâo) — type of triangle
  • Vietnamese: tam giác đều — type of triangle
  • Welsh: triongl hafalochrog — type of triangle