Phrase guide

right 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Southern-England: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

A triangle having a right angle as one of its interior angles.

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 triangle with one right angle

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: right-angled triangle

Antonyms: oblique triangle

Broader terms: triangle, trigon, trilateral

History

Etymology

No etymology was provided for this word.

Across languages

Translations

42 source translations are retained for this English entry.

  • Armenian: ուղղանկյուն եռանկյուն (uġġankyun eṙankyun) — a triangle having a right angle as one of its interior angles
  • Asturian: triángulu rectángulu — a triangle having a right angle as one of its interior angles
  • Azerbaijani: düzbucaqlı üçbucaq — a triangle having a right angle as one of its interior angles
  • Chinese Mandarin: 直角三角形 (zhíjiǎo sānjiǎoxíng) — a triangle having a right angle as one of its interior angles
  • Czech: pravoúhlý trojúhelník — a triangle having a right angle as one of its interior angles
  • Dutch: rechthoekige driehoek — a triangle having a right angle as one of its interior angles
  • Estonian: täisnurkne kolmnurk — a triangle having a right angle as one of its interior angles
  • Finnish: suorakulmainen kolmio — a triangle having a right angle as one of its interior angles
  • French: triangle rectangle — a triangle having a right angle as one of its interior angles
  • Galician: triángulo rectángulo — a triangle having a right angle as one of its interior angles
  • German: rechtwinkliges Dreieck — a triangle having a right angle as one of its interior angles
  • Greek: ορθογώνιο τρίγωνο (orthogónio trígono) — a triangle having a right angle as one of its interior angles
  • Hungarian: derékszögű háromszög — a triangle having a right angle as one of its interior angles
  • Irish: triantán dronuilleach — a triangle having a right angle as one of its interior angles
  • Italian: triangolo rettangolo — a triangle having a right angle as one of its interior angles
  • Japanese: 直角三角形 (chokkaku sankakukei) — a triangle having a right angle as one of its interior angles
  • Khmer: ត្រីកោណកែង (trəykaon kaeng) — a triangle having a right angle as one of its interior angles
  • Korean: 직각삼각형 (jikgaksamgakhyeong) — a triangle having a right angle as one of its interior angles
  • Macedonian: правоа́голен триа́голник (pravoágolen triágolnik) — a triangle having a right angle as one of its interior angles
  • Malayalam: മട്ടത്രികോണം (maṭṭatrikōṇaṁ) — a triangle having a right angle as one of its interior angles
  • Māori: tapatoru hāngai — a triangle having a right angle as one of its interior angles
  • Moore: yaas-susg kog-tãabga — a triangle having a right angle as one of its interior angles
  • Navajo: nishʼnáajigo heetsʼóóz — a triangle having a right angle as one of its interior angles
  • Persian: مثلث قائم الزاویه — a triangle having a right angle as one of its interior angles
  • Persian: سهگوش راست (se-guš-e râst) — a triangle having a right angle as one of its interior angles
  • Polish: trójkąt prostokątny — a triangle having a right angle as one of its interior angles
  • Portuguese: triângulo reto — a triangle having a right angle as one of its interior angles
  • Portuguese: triângulo retângulo — a triangle having a right angle as one of its interior angles
  • Romanian: triunghi dreptunghic — a triangle having a right angle as one of its interior angles
  • Russian: прямоуго́льный треуго́льник (prjamougólʹnyj treugólʹnik) — a triangle having a right angle as one of its interior angles
  • Serbo-Croatian: правокутни трокут — a triangle having a right angle as one of its interior angles
  • Serbo-Croatian: pravokutni trokut — a triangle having a right angle as one of its interior angles
  • Slovak: pravouhlý trojuholník — a triangle having a right angle as one of its interior angles
  • Spanish: triángulo rectángulo — a triangle having a right angle as one of its interior angles
  • Swedish: rät triangel — a triangle having a right angle as one of its interior angles
  • Swedish: rätvinklig triangel — a triangle having a right angle as one of its interior angles
  • Tagalog: tatsihang tadlong — a triangle having a right angle as one of its interior angles
  • Tagalog: tadlunging tatsiha — a triangle having a right angle as one of its interior angles
  • Thai: สามเหลี่ยมมุมฉาก (sǎam-lìiam-mum-chàak) — a triangle having a right angle as one of its interior angles
  • Turkish: dik üçgen — a triangle having a right angle as one of its interior angles
  • Ukrainian: прямоку́тний трику́тник (prjamokútnyj trykútnyk) — a triangle having a right angle as one of its interior angles
  • Vietnamese: tam giác vuông — a triangle having a right angle as one of its interior angles