When all three sides of a triangle are congruent, it is called an equilateral triangle.
Triangles can't have two sides, but a triangle with three congruent sides is a equilateral or three congruent angles in a triangle is equilangular.
That is an equilateral triangle.
scalene triangle
An equilateral triangle
An Isosceles Triangle.
In a triangle with no sides congruent we call it scalene.
Isoceles
A regular triangle is a equalateral triangle. A regular triangle is one for which all sides are congruent and all interior angles ---- are congruent ---- ---- ---- ----
i would call it a square
An isosceles triangle
A regular polygon such as a square or an equilateral triangle ..... etc .....