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KB:
SUMO
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Formal Language:
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traditionalLogic
KB Term:
Sigma KEE - TwoDimensionalAngle
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二維角度
Any two
OneDimensionalFigure
s (i.e. straight lines) meeting at a single
GeometricPoint
.
Relationships
Parents
開放二維圖
The class of
TwoDimensionalFigure
s that are not
ClosedTwoDimensionalFigure
s.
Children
銳角
Any
TwoDimensionalAngle
that has an
angularMeasure
that is less than 90
AngularDegree
s.
斜角
Any
TwoDimensionalAngle
that has an
angularMeasure
that is greater than 90
AngularDegree
s.
直角
Any
TwoDimensionalAngle
that has the
angularMeasure
of 90
AngularDegree
s.
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Sigma version 3.0 is
open source software
produced by
Articulate Software
and its partners