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# Obtuse Triangle Calculator

An obtuse triangle is a type of triangle where one of the vertex angles is greater than 90°.

## What is an Obtuse Triangle Calculator?

'**Obtuse Triangle Calculator**' is an online tool that helps to find if the given triangle is an obtuse triangle or not. Online obtuse triangle calculator assists you to check whether the given triangle is an obtuse triangle or not n a few seconds.

### Obtuse Triangle Calculator

## How to Use Obtuse Triangle Calculator?

Please follow the below steps to check whether the triangle is an obtuse triangle or not:

**Step 1:**Enter the values of all three angles of the triangle in the given input boxes.**Step 2:**Click on the**"Check"**button to see if the triangle is an obtuse triangle or not.**Step 3:**Click on the**"Reset"**button to clear the fields and enter the different values.

## How to Find an Obtuse Triangle Calculator?

As we know that an obtuse triangle is a triangle whose one interior angle is greater than 90°. An obtuse-angled triangle can be scalene or isosceles, but never equilateral. So if any of the interior angles of the triangles is greater than 90° then the given triangle is an obtuse triangle.

**Solved Examples on Obtuse Triangle Calculator**

**Example 1:**

Find whether the triangle ABC with interior angles as 20°, 50°, and 110° is an acute or obtuse triangle.

**Solution:**

The different angles of the triangle are

a = 20°

b = 50°

c = 110°

Since angle c is greater than 90° i.e. 110°

So, the triangle ABC is an obtuse triangle.

**Example 2:**

Find whether the triangle ABC with interior angles as 40°, 60°, and 130° is an acute or obtuse triangle.

**Solution:**

The different angles of the triangle are

a = 40°

b = 60°

c = 130°

Since angle c is greater than 90° i.e. 130°

So, the triangle ABC is an obtuse triangle.

**Example 3:**

Find whether the triangle ABC with interior angles as 20°, 45°, and 45° is an acute or obtuse triangle.

**Solution:**

The different angles of the triangle are

a = 20°

b = 45°

c = 45°

Since angle c is less than 90° i.e. 45°

So, the triangle ABC is not an obtuse triangle.

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