Most scientists would call that a 68-gon. You can also call it a hexacontakaioctagon.
There are: 0.5*(682-(3*68)) = 2210 diagonals
name of 4000 sided polygon
The name of a 600 sided polygon is Hexcosiagon.
The name of a 200 sided polygon is dihectagon.
There is not a name for such a polygon. A polygon with one million sides is called a megagon though..
There are: 0.5*(682-(3*68)) = 2210 diagonals
the name of a 7sided polygon is hexagon.
inite polygon
The name for this polygon is a nonagon,
name of 4000 sided polygon
The name of a 7 sided polygon is Heptagon.
The name of a 12 sided polygon is Dodecagon.
Regular polygon Equilateral polygon Polygon with rotational symmetry
A 8 sided polygon is called a octagon.
The name of a 19 sided polygon is enneadecagon.
The name of a polygon with 15 sides is a pentadecagon
The name of a 15 sided polygon is Pentadecagon.