þríhyrningur

Icelandic

Etymology

From þrí- (“tri-”, from þrír (“three”)) +‎ hyrningur (“polygon”).

Noun

þríhyrningur m (genitive singular þríhyrnings, nominative plural þríhyrningar)

1. (geometry) a triangle

Declension

Declension of þríhyrningur (masculine)

	singular		plural
	indefinite	definite	indefinite	definite
nominative	þríhyrningur	þríhyrningurinn	þríhyrningar	þríhyrningarnir
accusative	þríhyrning	þríhyrninginn	þríhyrninga	þríhyrningana
dative	þríhyrningi	þríhyrningnum	þríhyrningum	þríhyrningunum
genitive	þríhyrnings	þríhyrningsins	þríhyrninga	þríhyrninganna

Derived terms

• aðfelldur þríhyrningur (“asymptotic triangle”)
• Ceva-þríhyrningur (“aliquot triangle, cevian triangle”)
• einshyrndur þríhyrningur, einslaga þríhyrningur (“similar triangle”)
• fótpunktaþríhyrningur (“pedal triangle”)
• hornalínuþríhyrningur (“diagonal triangle”)
• hringbogaþríhyrningur (“circular triangle”)
• hæðafótpunktaþríhyrningur (“orthic triangle”)
• jafnhliða þríhyrningur (“equilateral triangle, regular triangle”)
• kúluþríhyrningur (“spherical triangle”)
• mishliða þríhyrningur, ójafnarma þríhyrningur (“scalene triangle”)
• Pascal-þríhyrningur, þríhyrningur Pascals (“Pascal's triangle”)
• pýþagórskur þríhyrningur (“Pythagorean triangle”)
• rétthyrndur þríhyrningur (“right triangle, right-angled triangle”)
• sjálfskautaður þríhyrningur (“self-polar triangle”)
• skautþríhyrningur (“polar triangle”)
• skáhyrndur þríhyrningur (“oblique triangle”)
• tvíaðfelldur þríhyrningur (“doubly asymptotic triangle”)
• þríaðfelldur þríhyrningur (“trebly asymptotic triangle”)

See also

• hyrna