The polygon coordinates divided by gaps. Can have x+iy appearance  

The method of splitting any, not crossed polygon into triangles is considered. Except experiment on realization of a similar algorithm, we still have an opportunity further to count coordinates of the center of gravity of such polygons.
Calculation is conducted online, and to you as to the user of this website, it is enough to enter coordinates of tops of a polygon.
The only thing the condition, input coordinates is carried out only (!!!) clockwise. At noncompliance with this condition, the result will be incorrect if the boat in general answers you:) Except the list with triangle coordinates, as a result of calculations the area of each of triangles will be calculated.