## How do you classify a triangle by its side lengths?

Classifying Triangles You can determine whether a triangle is acute, right, or obtuse by its side lengths.

In TABC with longest side c: If c2 a2 b2, then TABC is acute.

If c2 a2 b2, then TABC is right..

## What is the rule for side lengths of a triangle?

Triangle Inequality Theorem. The sum of the lengths of any two sides of a triangle is greater than the length of the third side.

## How do you find the sides of an obtuse triangle?

You can calculate an obtuse triangle using the lengths of the triangle’s sides. Square the length of both sides of the triangle that intersect to create the obtuse angle, and add the squares together. For example, if the lengths of the sides measure 3 and 2, then squaring them would result in 9 and 4.

## How many sides does a obtuse triangle have?

Properties of Obtuse Triangles An obtuse triangle may be either isosceles (two equal sides and two equal angles) or scalene (no equal sides or angles). An obtuse triangle has only one inscribed square.

## What does an obtuse triangle look like?

An obtuse-angled triangle is a triangle in which one of the interior angles measures more than 90° degrees. In an obtuse triangle, if one angle measures more than 90°, then the sum of the remaining two angles is less than 90°. Here, the triangle ABC is an obtuse triangle, as ∠A measures more than 90 degrees.

## What is a right obtuse triangle?

A right triangle has one angle that’s 90° and a corner that looks like an L. Obtuse triangles have one angle that’s greater than 90°.