A 200-gon will do
It's perfectly acceptable to call it a 200-agon but what's more important is knowing how to work out its properties.
The name of a 200 sided polygon is dihectagon.
300
a polygon is usually made from simply adding on another side fron the previous one to the next. if you believe i answered your question call me 0403 200 602
A dihectagon
an Irregular Polygon
A regular polygon
an irregular polygon
A dihectagon.
For such large numbers as this, hust call it a "200-sided polygon". This is simpler, and more useful, than inventing fancy names for figures of different number of sizes.
A regular polygon.
Just call it a "24-sided polygon".