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

Triangle Solver and Classify Triangles Calculator

Enter 3 sides, 2 angles and 1 side, or 2 sides and the included angle below
Side 1 Side 2 Side 3 Angle 1 Angle 2 Angle 3
  

How does the Triangle Solver and Classify Triangles Calculator work?

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.

What 6 formulas are used for the Triangle Solver and Classify Triangles Calculator?

  1. Acute Triangle = All angles < 90°
  2. Right Triangle = One Angle = 90°
  3. Obtuse Triangle = One angle > 90°
  4. Equilateral Triangle = All sides equal
  5. Isosceles Triangle = 2 sides equal
  6. Scalene Triangle = No sides equal

For more math formulas, check out our Formula Dossier

What 6 concepts are covered in the Triangle Solver and Classify Triangles Calculator?

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

What are some example calculations for the Triangle Solver and Classify Triangles Calculator?

  1. Find the area of the triangle with side lengths measuring 48 cm, 55 cm, and 73 cm