Triangle Calculator Triangle Calculator Calculate triangle properties (sides, angles, area, perimeter) Unit System Metric (cm) Imperial (in) Input Type Three Sides (SSS) Two Sides and Included Angle (SAS) Two Sides and Non-Included Angle (SSA) Two Angles and a Side (ASA/AAS) Side a (cm) Side b (cm) Side c (cm) Angle A (°) Angle B (°) Angle C (°) Calculate Sides: a = , b = , c = Angles: A = °, B = °, C = ° Area: Perimeter: Type: Results are approximate. Ensure inputs form a valid triangle.