Answer:
the side of a polygon is 3 above
For Example is
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
Dodecago - 12 sides