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  Polygon

 Sigma KEE - Polygon

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多边形
A ClosedTwoDimensionalFigure that is composed exclusively of straight lines, i.e. OneDimensionalFigures.
Relationships      
Parents 封闭的二维图 Any TwoDimensionalFigure which has a well defined interior and exterior.
Children 四边形Any four-sided Polygon.
 三角形Any three-sided Polygon.


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Sigma version 3.0 is open source software produced by Articulate Software and its partners