Does any polygon have the sum of its angle equal to 1000 how about 900?

Well, honey, a polygon with 1000 degrees for the sum of its angles would be one sassy shape with over 7 sides, like an octagon or higher. And for 900 degrees, you're looking at a hexagon or more. So, in short, yes, there are polygons out there strutting their stuff with those angle sums.