It is a regular polygon
Equilateral triangle or any other type of a regular polygon.
It is an irregular polygon such as a scalene triangle
A polygon in which all sides are congruent?Improved Answer:-Any regular polygon as for example an equilateral triangle or a square
equilateral Triangle
a circle and a scalene triangle.
An equilateral triangle
A regular polygon such as a square or an equilateral triangle ..... etc .....
It can be many types of polygons a square is an easy one, but there are also equallateral triangles when all the sides of a triangle are congruent with each other. There is also an octagon an 8 sided polygon that can be congruent sides, and it just keeps going on.
It is a scalene triangle
square * * * * * A square is an example, but is not the whole answer. A polygon wit all sides congruent is an equilateral polygon (think equilateral triangle, or a rhombus). If all the angles are also congruent, then it is a regular polygon.
The answer is in your question it is defined to be a regular polygon as for example an equilateral triangle
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