How circle have side and corner?

A circle does not have sides or corners in the traditional sense, as it is defined as a shape consisting of all points equidistant from a central point, forming a continuous curve. Unlike polygons, which have straight edges and vertices, a circle is characterized by its smooth, curved boundary. The concept of "sides" and "corners" applies to shapes with angles and edges, which a circle inherently lacks. Thus, while we can discuss the circle's radius and diameter, it fundamentally does not possess sides or corners.