isosceles triangle
A Scalene triangle has no sides of equal length.
An isosceles triangle has exactly two sides that are equal in length.
Most quadrilaterals do not have opposite sides which are equal in length. Sadly, there is no special name for them.
equal lateral
The name for a triangle with two sides of equal length is an isosceles triangle.
isosceles
It is an equilateral triangle that has 3 equal sides.
isocoles
An Isosceles Triangle has two sides that are equal in length.* * * * *But, a triangle with no two sides equal (as per the question that was asked), the answer is a scalene triangle.
An isoceles triangle has two sides of equal length.
If a rectangle has its length equal to its width, then all four sides are of equal length and it is a square.
That is called a regular polygon.