There are many types of polygons. To explore them all along with their properties can be a course in itself.
Basically, a polygon is a closed plane figure made of three or more sides.
Number of sides
Name of polygon
3
triangle
4
quadrilateral
5
pentagon
6
hexagon
7
heptagon
8
octagon
9
nonagon
10
decagon
12
dodecagon
Examples of polygons:
Triangle:
Quadrilateral:
Pentagon:
Hexagon:
Heptagon:
Octagon:
Nonagon:
Decagon:
Dodecagon:
Polygons are all around. Take a close look around you in your house, at the work place, or in an amusement park, you will find many real life examples of polygons.