Geometry

Classifying Triangles Calculator

Name a triangle from three side lengths (equilateral, isosceles, scalene; acute/right/obtuse).

Free to use — no sign-up or login.

Classification

This free Classifying Triangles Calculator covers Name a triangle from three side lengths (equilateral, isosceles, scalene; acute/right/obtuse).

Compare sides for equality; compare a²+b² with c² for the angle type. Related geometry tools sit beside How it works, with no account required.

Using the Classifying Triangles Calculator

Name a triangle from three side lengths (equilateral, isosceles, scalene; acute/right/obtuse). Typical inputs are a, b and c. How it works beside the form states the identity the Classifying Triangles Calculator applies.

FAQ

How do I use the Classifying Triangles Calculator?

Open the Classifying Triangles Calculator, fill a, b and c, and read the result. Compare sides for equality; compare a²+b² with c² for the angle type.

What formula does the Classifying Triangles Calculator use?

The Classifying Triangles Calculator uses the identity in How it works. In words: Compare sides for equality; compare a²+b² with c² for the angle type.