1. having three sides and three angles; shaped like a triangle
2. involving three people, groups, or things

Examples

• The triangular roof gave the house a distinctive appearance.
• She cut the sandwich into triangular pieces.
• The triangular trade route connected Europe, Africa, and the Americas.
• A triangular relationship developed between the three friends.
• The triangular warning sign caught the driver’s attention.
• The park featured a triangular garden in the center.
• They formed a triangular alliance to compete against larger companies.