A polygon is a closed figure made up of three or more line segments.
Names of polygons:
Triangle - 3 sides
Quadrilateral - 4 sides
Pentagon - 5 sides
Hexagon - 6 sides
Heptagon - 7 sides
Octagon - 8 sides
Nonagon - 9 sides
Decagon - 10 sides
Hendecagon - 11 sides
Dodecagon - 12 sides
