Is circle a polygon?

A polygon is composed of a finite set of straight line segments, and a circle is not. But you can make a polygon that is as close to a circle as you want; the more sides you give it, the more it will look like a circle. read more

Archimedes, in his attempt to calculate pi with reasonable accuracy, approximated pi by considering regular polygons with many sides inscribed about a circle and considering the obvious fact that the area of the circle is between the area of the inscribed polygon and that of the circumscribed polygon. read more

A circle is not a polygon because it does not conform to the definition of a polygon. The definition of a polygon is a closed figure formed by straight lines or straight sides. Although the circle is a closed figure, it is not formed by straight line segments. read more