A polygon is a closed plane figure made up of 3 or more line segments.

More About Polygon

Polygons have special names depending on the number of lines forming their boundary.
For example, a polygon with three sides is called a triangle.
A polygon with four sides is called a quadrilateral.
A polygon with five sides is called a pentagon.
Polygons that have all sides measure the same are called regular polygons.

Video Examples: What is a polygon

Example of Polygon

The figure shows a few polygons.

Solved Example on Polygon

Ques: Identify the set hat shows the polygons arranged in the decreasing order of number of sides.

Choices:

A. Octagon, hexagon, pentagon, and quadrilateral
B. Pentagon, hexagon, octagon, and quadrilateral
C. Quadrilateral, pentagon, hexagon, and octagon
D. Hexagon, pentagon, quadrilateral, and octagon
Correct Answer: A

Solution:

Step 1: The number of sides of quadrilateral, hexagon, pentagon, and octagon are 4, 6, 5 and 8 respectively.
Step 2: Decreasing order means arranging from the greatest to the least.
Step 3: The decreasing order of the polygons with respect to the number of sides is octagon (8), hexagon (6), pentagon (5), and quadrilateral (4).