Only if the triangle is degenerate.
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A triangle with 2 equal side lengths is called an isosceles triangle.
An isosceles triangle has 2 equal sides and 1 side different in length
An isoceles triangle has 2 congruent sides of equal length, and one of a different length.(If all three side lengths are the same, you have an equilateral triangle, which is also equiangular, each angle 60°).
An equilateral triangle, by definition, has three sides of equal length. The definition for an isosceles triangle is that it must have two sides of equal length, the other side being free to have any length. Based on these two definitions, we can say that an equilateral triangle is a special case of the isosceles triangle, namely one where the third side is also equal to the other two sides.
A radius of a regular triangle is 12 . find the length of one side of the triangle?