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Definition 2025

See also: right-angle

At the bottom left of this triangle is a right angle.

right angle ‎(plural right angles)

(geometry) Half of the angle formed by a single straight line, equivalent to 90 degrees.
(mathematics) An ∟ character.

angle of 90 degrees

Burmese: ထောင့်မှန် (my) ‎(htaung.hman), ကျင်တွယ်ထောင့် (my) ‎(kyangtwaihtaung.)
Chinese:

Cantonese: 直角 ‎(zik⁶ gok³)

Mandarin: 直角 (zh) ‎(zhíjiǎo)
Czech: pravý úhel (cs) m
Dutch: rechte hoek
Esperanto: orto
Estonian: täisnurk
Finnish: suora kulma (fi)
French: angle droit (fr) m, droit (fr) m
German: rechter Winkel m
Greek: ορθή γωνία (el) f ‎(orthí gonía)
Hawaiian: huina kūpono
Hebrew: זָוִית יְשָׁרָה (he) ‎(zavít yeshára)
Hungarian: derékszög (hu)
Italian: angolo retto (it) m
Japanese: 直角 (ja) ‎(chokkaku)
Korean: 직각 (ko) ‎(jikgak)
Macedonian: прав агол m ‎(prav ágol)

Maori: koki hāngai
Norwegian: rett vinkel (no) m
Persian: زاویه قائمه
Polish: kąt prosty (pl) m
Portuguese: ângulo reto (pt) m
Romanian: unghi drept (ro) n
Russian: прямо́й у́гол (ru) m ‎(prjamój úgol)
Scottish Gaelic: ceàrn ceart m
Serbo-Croatian:

Cyrillic: прави кут m, прави угао m ‎(pravi ugao)

Roman: pravi kut m, pravi ugao m
Shan: ၸဵင်ႇ ၶိုင်ႈ ‎(tseŋ2 kʰɯŋ3)
Sindhi: گُونِي ڪُنڊَ (sd) f
Spanish: ángulo recto (es) m
Swedish: rät vinkel c
Tagalog: sihang tadlong
Volapük: lögul (vo)
Welsh: cyfongl f