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Sigma KEE - TwoDimensionalAngle
KB Term: 

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TwoDimensionalAngle
Any two OneDimensionalFigures (i.e. straight lines) meeting at a single GeometricPoint.
Relationships      
Parents OpenTwoDimensionalFigure The class of TwoDimensionalFigures that are not ClosedTwoDimensionalFigures.
Children AcuteAngleAny TwoDimensionalAngle that has an angularMeasure that is less than 90 AngularDegrees.
 ObliqueAngleAny TwoDimensionalAngle that has an angularMeasure that is greater than 90 AngularDegrees.
 RightAngleAny TwoDimensionalAngle that has the angularMeasure of 90 AngularDegrees.


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