Triangle Calculator
Calculate sides, angles, and area of any triangle.
Triangle Geometry Basics
A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry.
Common Formulas
- Perimeter: a + b + c
- Area (Heron's Formula): √[s(s-a)(s-b)(s-c)], where s is the semi-perimeter.
- Triangle Inequality: The sum of any two sides must be greater than the third side.