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direct-childrendocumentationgraph
OpenTwoDimensionalFigure4The class of TwoDimensionalFigures that are not ClosedTwoDimensionalFigures.^
    TwoDimensionalAngle3Any two OneDimensionalFigures (i.e. straight lines) meeting at a single GeometricPoint.^
        ObliqueAngle.Any TwoDimensionalAngle that has an angularMeasure that is greater than 90 AngularDegrees.^
        RightAngle.Any TwoDimensionalAngle that has the angularMeasure of 90 AngularDegrees.^
        AcuteAngle.Any TwoDimensionalAngle that has an angularMeasure that is less than 90 AngularDegrees.^

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