right triangle

noun

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

Similar
right-angled triangle
Opposite
oblique triangle
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Meanings

nounright triangle (plural right triangles)

plural right triangles

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

    Synonyms: right-angled triangle

Synonyms & antonyms

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

Similar
right-angled triangle

More synonyms by meaning

nouna triangle with one right angle

Similar
right-angled triangle
Opposite
oblique triangle
Broader
triangletrigontrilateral
Also see
right-angled triangle

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Chinese Mandarin 直角三角形
  • 直角三角形 (zhíjiǎo sānjiǎoxíng)a triangle having a right angle as one of its interior angles
Czech pravoúhlý trojúhelník
  • pravoúhlý trojúhelníka triangle having a right angle as one of its interior angles
Dutch rechthoekige driehoek
  • rechthoekige driehoeka triangle having a right angle as one of its interior angles
Estonian täisnurkne kolmnurk
  • täisnurkne kolmnurka triangle having a right angle as one of its interior angles
Finnish suorakulmainen kolmio
  • suorakulmainen kolmioa triangle having a right angle as one of its interior angles
French triangle rectangle
  • triangle rectanglea triangle having a right angle as one of its interior angles
German rechtwinkliges Dreieck
  • rechtwinkliges Dreiecka triangle having a right angle as one of its interior angles
Greek ορθογώνιο τρίγωνο
  • ορθογώνιο τρίγωνο (orthogónio trígono)a triangle having a right angle as one of its interior angles
Hungarian derékszögű háromszög
  • derékszögű háromszöga triangle having a right angle as one of its interior angles
Irish triantán dronuilleach
  • triantán dronuilleacha triangle having a right angle as one of its interior angles
Italian triangolo rettangolo
  • triangolo rettangoloa triangle having a right angle as one of its interior angles
Japanese 直角三角形
  • 直角三角形 (chokkaku sankakukei)a triangle having a right angle as one of its interior angles
Korean 직각삼각형
  • 직각삼각형 (jikgaksamgakhyeong)a triangle having a right angle as one of its interior angles
Māori tapatoru hāngai
  • tapatoru hāngaia triangle having a right angle as one of its interior angles
Persian مثلث قائم الزاویه, سهگوش راست
  • مثلث قائم الزاویهa triangle having a right angle as one of its interior angles
  • سهگوش راست (se-guš-e râst)a triangle having a right angle as one of its interior angles
Polish trójkąt prostokątny
  • trójkąt prostokątnya triangle having a right angle as one of its interior angles
Portuguese triângulo reto, triângulo retângulo
  • triângulo retoa triangle having a right angle as one of its interior angles
  • triângulo retânguloa triangle having a right angle as one of its interior angles
Romanian triunghi dreptunghic
  • triunghi dreptunghica triangle having a right angle as one of its interior angles
Russian прямоуго́льный треуго́льник
  • прямоуго́льный треуго́льник (prjamougólʹnyj treugólʹnik)a triangle having a right angle as one of its interior angles
Slovak pravouhlý trojuholník
  • pravouhlý trojuholníka triangle having a right angle as one of its interior angles
Spanish triángulo rectángulo
  • triángulo rectánguloa triangle having a right angle as one of its interior angles
Swedish rät triangel, rätvinklig triangel
  • rät triangela triangle having a right angle as one of its interior angles
  • rätvinklig triangela triangle having a right angle as one of its interior angles
Tagalog tatsihang tadlong, tadlunging tatsiha
  • tatsihang tadlonga triangle having a right angle as one of its interior angles
  • tadlunging tatsihaa triangle having a right angle as one of its interior angles
Thai สามเหลี่ยมมุมฉาก
  • สามเหลี่ยมมุมฉาก (sǎam-lìiam-mum-chàak)a triangle having a right angle as one of its interior angles
Turkish dik üçgen
  • dik üçgena triangle having a right angle as one of its interior angles
Ukrainian прямоку́тний трику́тник
  • прямоку́тний трику́тник (prjamokútnyj trykútnyk)a triangle having a right angle as one of its interior angles
Vietnamese tam giác vuông
  • tam giác vuônga triangle having a right angle as one of its interior angles
Cite this entry
APA

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

MLA

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

Chicago

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

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