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  OpenTwoDimensionalFigure

 Sigma KEE - OpenTwoDimensionalFigure

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open two dimensional figure
The class of TwoDimensionalFigures that are not ClosedTwoDimensionalFigures.
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 two dimensional angleAny two OneDimensionalFigures (i.e. straight lines) meeting at a single GeometricPoint.


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