Geometry & Trigonometry Solver

Triangle Calculator – Sides, Angles, Area & Hypotenuse

Solve any triangle using Right Triangle (Pythagorean theorem), SSS (3 sides), SAS, or ASA theorems. Compute hypotenuse, angles, area, perimeter, and sin/cos/tan ratios.

Triangle Area -

Calculated Triangle Area

Leg a (Opposite)

Leg b (Adjacent)

Side a

Side b

Side c

Side a

Included Angle C (°)

Side b

Angle A (°)

Included Side c

Angle B (°)

Geometry Visualization Right Scalene

Triangle Area-

Perimeter

Hypotenuse c

Angle A

Angle B

Trig Ratios

Key Triangle Theorems & Trigonometry Formulas

Pythagorean Theorem

For any right-angled triangle with legs a and b and hypotenuse c: c² = a² + b².

Heron's Formula

Given three sides a, b, c and semi-perimeter s = (a+b+c)/2: Area = √(s(s-a)(s-b)(s-c)).