How to fix this code?

Quote:

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Originally Posted by ice

Thank you a lot copeg, your suggestion of "replace fillPolygon with drawPolygon" is so useful, I can see it is a line now. But how to change those coordinates to show a octagon?

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Draw it out on a sheet of paper and define the appropriate coordinates. See Drawing Arbitrary Shapes

Thanks a lot copeg, I just drawed Octagon and finally solved my 2 problems.
b-)