Scalene Triangle
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.
Video Examples: Proportions, Triangles, MissingSides, Scalene Triangles
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
Ques: Identify the scalene triangle from the figures shown.
Choices:
A. Figure 1B. 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.
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