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Sigma KEE - ClosedTwoDimensionalFigure

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closed two dimensional figure
Any TwoDimensionalFigure which has a well defined interior and exterior.
Relationships      
Parents two dimensional figure The class of GeometricFigures that have position and an extension along two dimensions, viz. plane figures like circles and polygons.
Children polygonA ClosedTwoDimensionalFigure that is composed exclusively of straight lines.
Instancescircle sectorA slice of a Circle, i.e. any ClosedTwoDimensionalFigure which consists of two Radii and the arc of the Circle that they bound.
 circular segmentA CircularSegment is a plane region bounded by a circular arc (of less than Pi radian by convention) and the circular chord connecting its endpoints.[wikepedia]
 ovalAn instance of ClosedTwoDimensionalFigures that is produced by the intersection of a Cone with a ClosedTwoDimensionalFigure.


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