📐 Triangle Calculator

Solve any triangle problem. Calculate area, angles, and sides using your known values.

Calculation Method

Base

Height

Side a

Side b

Side c

Side a

Angle C (°)

Side b

Angle A (°)

Side c

Angle B (°)

Side a

Side b

Side c

Triangle Classifications

By Sides

Equilateral: All 3 sides equal
Isosceles: 2 sides equal
Scalene: No sides equal

By Angles

Acute: All angles < 90°
Right: One angle = 90°
Obtuse: One angle > 90°