triangular

/traɪˈæŋɡjələr/
adjective
  1. Shaped like a triangle; having three sides and three angles.
    • She cut the sandwich into triangular pieces for the party.
    • The roof of the cabin had a triangular shape that shed rain easily.
    • The sail on the small boat was triangular and bright red.
  2. Involving three people, groups, or things.
    • The three companies formed a triangular partnership to share resources.
    • The negotiations were triangular, with each side representing a different country.
    • Their friendship had a triangular dynamic, with each person bringing something unique.
Antonyms