1. (noun) a three-sided polygon

• triangle
• trigon

2. (adjective) having three sides

• three-sided
• triangular

1. (noun) a three-sided polygon

• acute triangle
• acute-angled triangle
• cuneus
• wedge
• wedge shape
• equiangular triangle
• equilateral triangle
• isosceles triangle
• oblique triangle
• obtuse triangle
• obtuse-angled triangle
• right triangle
• right-angled triangle
• scalene triangle

1. (adjective) involving three parties

• mutual
• reciprocal

2. (adjective) having three sides

• many-sided
• multilateral

1. (noun) a three-sided polygon

• polygon
• polygonal shape

1. (noun) a three-sided polygon

• three-sided
• triangular
• triangular
• triangulate
• triangulate

2. (adjective) having three sides

• triangle
• trigon
• triangularity