This Triangle Calculator helps solve queries of Matric, A Level, and O-Level Students.

Triangle Calculator (SSS, SAS, ASA, AAS, SSA)

Triangle Solver

Enter exactly 3 values:

C A B b a c

Side a

Angle A (α)

Side b

Angle B (β)

Side c

Angle C (γ)

This calculator can solve any triangle. You must enter exactly three known values (e.g., sides or angles).

SSS: Three sides (a, b, c).
SAS: Two sides and the angle between them (e.g., a, b, C).
ASA: Two angles and the side between them (e.g., A, B, c).
AAS: Two angles and a side not between them (e.g., A, B, a).
SSA: Two sides and an angle not between them (e.g., a, b, A). Note: This case may be ambiguous, but the calculator will provide one valid solution.
You cannot solve a triangle with only three angles (AAA).
The sum of any two sides must be larger than the third side.
The sum of angles cannot be 180° or more.