Answer with explanation:
→ A circle is a plane figure. It does not have straight sides,so it is not a polygon.
We can say that Circle is a Simple Closed Figure.
In other way, a Circle is a locus of all the points Such that Distance from a fixed point ,called Center is Same.And When you join all these points ,which is infinite in number you , will get a 2 -D Shape called Circle.
In real life, Bangle, Rotation of 3-4 Blade Ceiling Fan forms a Circular Shape.
→→Circle= Simple Closed Figure.