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Math

Triangle Solver

SSS or SAS — sides and angles

Runs locally in your browser

Parameters

Results

∠A
38.21°
∠B
60°
∠C
81.79°
Area
17.3205

How it works

Solve a triangle given three sides (SSS) or two sides and the included angle (SAS).

Who it's for: Geometry students and surveyors working with triangle measurements.

SSS mode finds all angles from three side lengths.

SAS mode uses two sides and the angle between them.

Reports all sides and angles where computable.

How to use

  1. Select mode: SSS or SAS.
  2. SSS: enter sides a, b, c.
  3. SAS: enter sides a, b and angle c in degrees.
  4. Review computed sides and angles.