**Definition of Scalene Triangle**

- A triangle in which all the three sides are of different lengths is called a Scalene Triangle.

**More about Scalene Triangle**

- A triangle with no congruent sides is called scalene triangle.
- Perimeter of a scalene triangle is given as:

P = a + b + c, where a, b, c, are the sides of the triangle. - All the angles of a scalene triangle are not equal.

**Example of Scalene Triangle**

- In the given figure, the length of the sides a, b, and c are not equal. So, it is a scalene triangle.

**Solved Example on Scalene Triangle**

Identify the scalene triangle from the figures shown.

Choices:

A. Figure 1

B. Figure 2

C. Figure 3

D. Figure 1 and Figure 4

Correct Answer: D

Solution:

Step 1:In a scalene triangle, all the sides are unequal.

Step 2:Here, Figure 1 and Figure 4 have all the sides unequal.

Step 3:So, Figure 1 and Figure 4 are scalene triangles.

**Related Terms for Scalene Triangle**

- Sides
- Triangle
- Unequal