An isosceles triangle has three sides, two of which are exactly equal in length.
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Let us recall the definition of an isosceles triangle. An isosceles triangle is a triangle with two equal or congruent sides. In this definition, it is not stated that it has exactly two equal sides. An equilateral triangle has three equal or congruent sides. If it has three equal sides, then it must have two equal sides. Therefore, an equilateral triangle is considered as an isosceles triangle. But, an isosceles triangle is not necessarily an equilateral triangle.
An isosceles triangle has exactly two sides which are equal. (The word congruent usually applies to triangles, not sides.)
An isosceles triangle has two equal sides
An isosceles triangle is a triangle that has at least 2 sides that are congruent.More simply put, an isosceles triangle has two sides of equal length (and therefore two equal angles opposite those equal sides)
No two sides of a scalene triangle are equal.