Phrase guide

obtuse 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 one of whose angles is obtuse.

Definition source: English Wiktionary via Wiktextract

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: obtuse-angled triangle

Antonyms: none provided

2

noun

Meaning 2

a triangle that contains an obtuse interior angle

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: obtuse-angled triangle

Antonyms: none provided

Broader terms: triangle, trigon, trilateral

History

Etymology

No etymology was provided for this word.

Across languages

Translations

22 source translations are retained for this English entry.

  • Asturian: triángulu obtusángulu — triangle with an obtuse angle
  • Catalan: triangle obtusangle — triangle with an obtuse angle
  • Chinese Mandarin: 鈍角三角形 /钝角三角形 (dùnjiǎo sānjiǎoxíng) — triangle with an obtuse angle
  • Estonian: nürinurkne kolmnurk — triangle with an obtuse angle
  • Finnish: tylppäkulmainen kolmio — triangle with an obtuse angle
  • French: triangle obtusangle — triangle with an obtuse angle
  • Galician: triángulo obtusángulo — triangle with an obtuse angle
  • Hungarian: tompaszögű háromszög — triangle with an obtuse angle
  • Italian: triangolo ottusangolo — triangle with an obtuse angle
  • Japanese: 鈍角三角形 (donkaku sankakukei) — triangle with an obtuse angle
  • Korean: 둔각삼각형 (dun'gaksamgakhyeong) — triangle with an obtuse angle
  • Māori: tapatoru koki hāpūpū — triangle with an obtuse angle
  • Polish: trójkąt rozwartokątny — triangle with an obtuse angle
  • Portuguese: triângulo obtusângulo — triangle with an obtuse angle
  • Romanian: triunghi obtuz — triangle with an obtuse angle
  • Russian: тупоуго́льный треуго́льник (tupougólʹnyj treugólʹnik) — triangle with an obtuse angle
  • Spanish: triángulo obtusángulo — triangle with an obtuse angle
  • Spanish: triángulo obtuso — triangle with an obtuse angle
  • Swedish: trubbig triangel — triangle with an obtuse angle
  • Swedish: trubbvinklig triangel — triangle with an obtuse angle
  • Thai: สามเหลี่ยมมุมป้าน (sǎam-lìiam-mum-bpâan) — triangle with an obtuse angle
  • Vietnamese: tam giác tù — triangle with an obtuse angle