triangular

English

A triangular sign

Etymology

From Middle English triangulare, trianguler, triangulere, from Old French triangulaire, triangulier and Latin triangulāris.

Pronunciation

• (UK) IPA^(key): /tɹaɪˈæŋ.ɡjə.lə/, /tɹaɪˈæŋ.ɡjʊ.lə/
• (US) IPA^(key): /tɹaɪˈæŋ.ɡjə.lɚ/, /tɹaɪˈaɪŋ.ɡjʊ.lɚ/

• Audio (US)

  (file)

Adjective

triangular (comparative more triangular, superlative most triangular)

1. Shaped like a triangle.
   • 1963, Margery Allingham, “Foreword: The Turk Street Mile”, in The China Governess: A Mystery, London: Chatto & Windus, OCLC 483591931, page 15:

     A very neat old woman, still in her good outdoor coat and best beehive hat, was sitting at a polished mahogany table on whose surface there were several scored scratches so deep that a triangular piece of the veneer had come cleanly away, […].

2. Of, or pertaining to, triangles.
3. Having a triangle as a base; as, a triangular prism, a triangular pyramid.
4. Having three elements or parties; trilateral, tripartite.

Synonyms

• threeside, trigonal

Related terms

• triangular harp

Translations

shaped like a triangle

• Arabic: مُثَلَّث‎ (muṯallaṯ)
• Belarusian: трохвуго́льны (troxvuhólʹny), трыку́тны (trykútny)
• Bengali: ত্রিভুজাকৃতি (tribhujakriti)
• Breton: tric'hornek (br)
• Bulgarian: триъгълен (triǎgǎlen)
• Czech: trojúhelníkový (cs), trojúhelníkovitý (cs)
• Danish: trekantet (da)
• Dutch: driehoekig (nl)
• Esperanto: triangula
• Finnish: kolmikulmainen (fi), kolmiomainen (fi)
• French: triangulaire (fr)
• Galician: triangular (gl)
• German: dreieckig (de)
• Greek:

  Ancient: τρίγωνος (trígōnos)

• Hungarian: háromszögletű, háromszög alakú, (rare in this sense) háromszögű (hu)
• Irish: triantánach
• Italian: triangolare (it)

• Latin: triangulus m
• Manx: tree-uillinagh, tree corneilagh
• Maori: tapatoru
• Norwegian:

  Bokmål: trekantet, trekanta (no), triangulær

  Nynorsk: trekanta, triangulær

• Polish: trójkątny (pl)
• Portuguese: triangular (pt) m or f
• Russian: треуго́льный (ru) (treugólʹnyj)
• Scottish Gaelic: triantanach
• Spanish: triangular (es)
• Swedish: triangulär (sv), trekantig (sv)
• Tagalog: tatsihain
• Ukrainian: трику́тний (trykútnyj)
• Yiddish: דרײַעקיק‎ (drayekik), דרײַקאַנטיק‎ (draykantik)

of or pertaining to triangles

• Bulgarian: триъгълен (triǎgǎlen)
• Czech: trojúhelníkový (cs)
• Esperanto: triangula
• Finnish: kolmio- (fi), kolmiomainen (fi)
• German: dreiecks- (de)
• Irish: triantánach

• Maori: tapatoru
• Portuguese: triangular (pt) m or f
• Russian: треуго́льный (ru) (treugólʹnyj)
• Scottish Gaelic: triantanach
• Spanish: triangular (es)
• Tagalog: tatsihain

having a triangle as a base

• Finnish: kolmikulmainen (fi), kolmiomainen (fi)
• Hungarian: háromszög alapú

• Irish: triantánach
• Scottish Gaelic: triantanach

having three elements or parties

• Finnish: kolmikantainen

• Hungarian: (with three parties) háromoldalú, három résztvevős, (with three elements) háromrészes (hu)

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout § Translations.

Translations to be checked

• Danish: ^{(please verify)} trekantet (da)
• Dutch: ^{(please verify)} driehoekig (nl)

• German: ^{(please verify)} dreieckig (de)

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Catalan

Pronunciation

• (Balearic, Central) IPA^(key): /tɾi.əŋ.ɡuˈla/
• (Valencian) IPA^(key): /tɾi.aŋ.ɡuˈlaɾ/

Adjective

triangular (masculine and feminine plural triangulars)

1. triangular

Verb

triangular (first-person singular present triangulo, past participle triangulat)

1. to triangulate

Conjugation

Conjugation of triangular (first conjugation)

infinitive			triangular
present participle			triangulant
past participle				masculine		feminine
		singular		triangulat		triangulada
		plural		triangulats		triangulades
person		singular			plural
		first	second	third	first	second	third
indicative		jo	tu	ell/ella vostè	nosaltres nós	vosaltres vós	ells/elles vostès
	present	triangulo	triangules	triangula	triangulem	trianguleu	triangulen
	imperfect	triangulava	triangulaves	triangulava	triangulàvem	triangulàveu	triangulaven
	future	triangularé	triangularàs	triangularà	triangularem	triangulareu	triangularan
	preterite	triangulí	triangulares	triangulà	triangulàrem	triangulàreu	triangularen
	conditional	triangularia	triangularies	triangularia	triangularíem	triangularíeu	triangularien
subjunctive		jo	tu	ell/ella vostè	nosaltres nós	vosaltres vós	ells/elles vostès
	present	trianguli	triangulis	trianguli	triangulem	trianguleu	triangulin
	imperfect	triangulés	triangulessis	triangulés	trianguléssim	trianguléssiu	triangulessin
imperative		—	tu	vostè	nosaltres	vosaltres vós	vostès
		—	triangula	trianguli	triangulem	trianguleu	triangulin

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Galician

Adjective

triangular m or f (plural triangulares)

1. triangular, shaped like a triangle
2. having a triangle as a base
3. having three elements or parties

Related terms

• triángulo
• triangularmente

Further reading

• “triangular” in Dicionario da Real Academia Galega, Royal Galician Academy.

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Portuguese

Etymology

From Late Latin triangulāris.

Pronunciation

Adjective:

 

• IPA^(key): (Brazil) /tɾi.ɐ̃.ɡuˈlaʁ/, [tɾi.ɐ̃.ɡuˈlah]

• IPA^(key): (Brazil) /tɾi.ɐ̃.ɡuˈlaʁ/, [tɾi.ɐ̃.ɡuˈlah]
  • IPA^(key): (São Paulo) /tɾi.ɐ̃.ɡuˈlaɾ/, [tɾi.ɐ̃.ɡuˈlaɾ]
  • IPA^(key): (Rio de Janeiro) /tɾi.ɐ̃.ɡuˈlaʁ/, [tɾi.ɐ̃.ɡuˈlaχ]

• IPA^(key): (Portugal) /tɾjɐ̃.ɡuˈlaɾ/, [tɾjɐ̃.ɡuˈlaɾ]

Noun:

 

• IPA^(key): (Brazil) /tɾi.ɐ̃.ɡuˈla(ʁ)/, [tɾi.ɐ̃.ɡuˈla(h)]

• IPA^(key): (Brazil) /tɾi.ɐ̃.ɡuˈla(ʁ)/, [tɾi.ɐ̃.ɡuˈla(h)]
  • IPA^(key): (São Paulo) /tɾi.ɐ̃.ɡuˈla(ɾ)/, [tɾi.ɐ̃.ɡuˈla(ɾ)]
  • IPA^(key): (Rio de Janeiro) /tɾi.ɐ̃.ɡuˈla(ʁ)/, [tɾi.ɐ̃.ɡuˈla(χ)]

• IPA^(key): (Portugal) /tɾjɐ̃.ɡuˈlaɾ/, [tɾjɐ̃.ɡuˈlaɾ]

• Hyphenation: tri‧an‧gu‧lar

Adjective

triangular m or f (plural triangulares, comparable)

1. triangular

Verb

triangular (first-person singular present indicative triangulo, past participle triangulado)

1. to triangulate

Conjugation

  Conjugation of the Portuguese -ar verb triangular

Notes:[edit] This is a regular verb of the -ar group. Verbs with this conjugation include: amar, cantar, gritar, marchar, mostrar, nadar, parar, participar, retirar, separar, viajar.
	Singular			Plural
	First-person (eu)	Second-person (tu)	Third-person (ele / ela / você)	First-person (nós)	Second-person (vós)	Third-person (eles / elas / vocês)
Infinitive
Impersonal	triangular
Personal	triangular	triangulares	triangular	triangularmos	triangulardes	triangularem
Gerund
	triangulando
Past participle
Masculine	triangulado			triangulados
Feminine	triangulada			trianguladas
Indicative
Present	triangulo	triangulas	triangula	triangulamos	triangulais	triangulam
Imperfect	triangulava	triangulavas	triangulava	triangulávamos	trianguláveis	triangulavam
Preterite	triangulei	triangulaste	triangulou	triangulamos triangulámos	triangulastes	triangularam
Pluperfect	triangulara	triangularas	triangulara	trianguláramos	trianguláreis	triangularam
Future	triangularei	triangularás	triangulará	triangularemos	triangulareis	triangularão
Conditional
	triangularia	triangularias	triangularia	triangularíamos	triangularíeis	triangulariam
Subjunctive
Present	triangule	triangules	triangule	triangulemos	trianguleis	triangulem
Imperfect	triangulasse	triangulasses	triangulasse	triangulássemos	triangulásseis	triangulassem
Future	triangular	triangulares	triangular	triangularmos	triangulardes	triangularem
Imperative
Affirmative	-	triangula	triangule	triangulemos	triangulai	triangulem
Negative (não)	-	triangules	triangule	triangulemos	trianguleis	triangulem

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Spanish

Pronunciation

• IPA^(key): /tɾjanɡuˈlaɾ/, [t̪ɾjãŋ.ɡuˈlaɾ]
• Hyphenation: tri‧an‧gu‧lar

Adjective

triangular (plural triangulares)

1. triangular

Verb

triangular (first-person singular present triangulo, first-person singular preterite triangulé, past participle triangulado)

1. to triangulate

Conjugation

    Conjugation of triangular (See Appendix:Spanish verbs)

infinitive			triangular
gerund			triangulando
past participle				masculine		feminine
		singular		triangulado		triangulada
		plural		triangulados		trianguladas
		singular			plural
		1st person	2nd person	3rd person	1st person	2nd person	3rd person
indicative		yo	tú vos	él/ella/ello usted	nosotros nosotras	vosotros vosotras	ellos/ellas ustedes
	present	triangulo	triangulastú triangulásvos	triangula	triangulamos	trianguláis	triangulan
	imperfect	triangulaba	triangulabas	triangulaba	triangulábamos	triangulabais	triangulaban
	preterite	triangulé	triangulaste	trianguló	triangulamos	triangulasteis	triangularon
	future	triangularé	triangularás	triangulará	triangularemos	triangularéis	triangularán
	conditional	triangularía	triangularías	triangularía	triangularíamos	triangularíais	triangularían
subjunctive		yo	tú vos	él/ella/ello usted	nosotros nosotras	vosotros vosotras	ellos/ellas ustedes
	present	triangule	triangulestú triangulésvos2	triangule	triangulemos	trianguléis	triangulen
	imperfect (ra)	triangulara	triangularas	triangulara	trianguláramos	triangularais	triangularan
	imperfect (se)	triangulase	triangulases	triangulase	triangulásemos	triangulaseis	triangulasen
	future1	triangulare	triangulares	triangulare	trianguláremos	triangulareis	triangularen
imperative		—	tú vos	usted	nosotros nosotras	vosotros vosotras	ustedes
	affirmative		triangulatú triangulávos	triangule	triangulemos	triangulad	triangulen
	negative		no triangules	no triangule	no triangulemos	no trianguléis	no triangulen

¹Mostly obsolete, now mainly used in legal language.
²Argentine and Uruguayan voseo prefers the tú form for the present subjunctive.

Further reading

• “triangular”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014