Nothing. A triangle is defined as a planar figure constructed with three line segments joined at their ends. A triangle has exactly three sides. Anything else is not a triangle.
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An isosceles triangle has no parallel sides but it does have 2 sides of equal lengths
A triangle.
i don't get the joke. kidding. an equilateral triangle
It is simply a right angle triangle but if the sides were the same then it is an isoceles right angle triangle
A regular triangle is a equalateral triangle. A regular triangle is one for which all sides are congruent and all interior angles ---- are congruent ---- ---- ---- ----