A 17 Sided Polygon is called Heptadecagon.
17-gon - After the dodecagon (12 sided polygon), there is usually just n-gon, where n is the number of sides the polygon has.
Heptadecagon.
The name of a polygon with 15 sides is a pentadecagon
polygon with 17 sides
The regular polygon of 17 sides is called the heptadecagon, or sometimes the heptakaidecagon.
There is no formula for how many sides there are in a polygon; the name of the polygon shows how many sides it has.
There is no name because such a polygon does not exist. A polygon must have at least three sides.
A pentagon is the polygon with 5 sides.
A polygon with seven sides is a heptagon.
There is not a name for such a polygon. A polygon with one million sides is called a megagon though..
A polygon with 6 sides is called a hexagon.