We know a polygon is a simple closed figure made up of only line segments. We can classify polygons according to the number of sides or vertices. <br />The simple polygon we know is a triangle. A triangle has three sides and, thus, is a three-sided polygon. <br />A four-sided polygon is called a quadrilateral. <br />A five sided polygon is called a pentagon. <br />In this manner, we can obtain a six-sided polygon called a hexagon, a seven-sided polygon, called a heptagon, and so on. <br />Read more at https://learnnext.com/lesson/CBSE-VIII-Maths-Polygons.htm
