If the lengths of its 3 sides are equal then it is an equilateral triangle.
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There are two types of triangle: 1. Scalene triangle - no sides have the same length 2. Isosceles triangle - at least two sides have the same length a. Equilateral triangle - an isosceles triangle with 3 sides the same length.
In terms of the length the sides of a triangle it can be classified into three types:if all three sides are equal then the triangle is an equilateral triangleif only two sides are equal then the triangle is an isosceles triangleif none of the three sides are equal then the triangle is called a scalene triangle
An isosceles triangle is a triangle with two sides of equal length.
No sides of a scalene triangle are the same length.
If all of its sides are the same length its an equilateral triangle. If only two of its sides are the same length it is an isosceles triangle. If all the sides are different lengths it is a scalene triangle