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Is there a formal name for an irregular polygon that has 1 or more holes or cutouts in it? I've heard it refered to as a "swiss cheese polygon" or a "Donut polygon". Is this even strictly a polygon?

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    @rschwieb Maybe I should have phrased it in the following way: "*the* plane figure of 'maximal area' bounded by a closed curve", although this is not quite precise.2012-08-29

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