This calculator also classifies your triangle based on sides and angles entered. Simply enter your sides and angles and press the Classify Triangle button">

Solves a triangle including area using the following solving methods

Side-Angle-Side (SAS) Side Angle Side

Angle-Side-Angle (ASA) Angle Side Angle

Side-Side-Angle (SSA) Side Angle Side

Side-Side-Side (SSS) Side Side Side

Area (A) is solved using Herons Formula

Law of Sines

Law of Cosines

Also classifies triangles based on sides and angles entered.

This calculator has 1 input.

Side-Angle-Side (SAS) Side Angle Side

Angle-Side-Angle (ASA) Angle Side Angle

Side-Side-Angle (SSA) Side Angle Side

Side-Side-Side (SSS) Side Side Side

Area (A) is solved using Herons Formula

Law of Sines

Law of Cosines

Also classifies triangles based on sides and angles entered.

This calculator has 1 input.

- Acute Triangle = All angles < 90°
- Right Triangle = One Angle = 90°
- Obtuse Triangle = One angle > 90°
- Equilateral Triangle = All sides equal
- Isosceles Triangle = 2 sides equal
- Scalene Triangle = No sides equal

For more math formulas, check out our Formula Dossier

- angle
- the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
- area
- Number of square units covering the shape
- heron
- side
- line segment joining two vertices in a polygon also known as an edge
- triangle
- a flat geometric figure that has three sides and three angles
- triangle solver and classify triangles