Triangles can be classified based on the number of congruent sides as follows:
Scalene triangle: A triangle in which all sides have different lengths.
Isosceles triangle: A triangle in which two sides have the same length, and the third side has a different length.
Equilateral triangle: A triangle in which all three sides have the same length.
Note that in an isosceles triangle, the two congruent sides are opposite to the same angle, while in an equilateral triangle, all three sides are congruent, and all three angles are equal.
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Triangles can be classified based on the number of congruent sides as follows:
Scalene triangle: A triangle in which all sides have different lengths.
Isosceles triangle: A triangle in which two sides have the same length, and the third side has a different length.
Equilateral triangle: A triangle in which all three sides have the same length.
Note that in an isosceles triangle, the two congruent sides are opposite to the same angle, while in an equilateral triangle, all three sides are congruent, and all three angles are equal.