(1) right triangle ::
rétthyrndur þríhyrningur(2) love triangle ::
ást þríhyrningur(3) equilateral triangle ::
jafnhliða þríhyrningur(4) isosceles triangle ::
jafnarma þríhyrningur(5) scalene triangle ::
ójafnarma þríhyrningi(6) warning triangle ::
viðvörun þríhyrningur(7) the triangle ::
þríhyrningur(8) right-angled triangle ::
rétthyrndan þríhyrning(9) acute triangle ::
bráð þríhyrningur(10) triangle inequality ::
þríhyrningur ójöfnuður