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Sigma KEE - Rectangle
KB Term: 

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Rectangle
Any Quadrilateral whose angles are all RightAngles.
Relationships      
Children SquareAny Rectangle whose sides are all equal.
InstancesAbstractProperties or qualities as distinguished from any particular embodiment of the properties/qualities in a physical medium. Instances of Abstract can be said to exist in the same sense as mathematical objects such as sets and relations, but they cannot exist at a particular place and time without some physical encoding or embodiment.
 AttributeQualities which we cannot or choose not to reify into subclasses of.
 ClosedTwoDimensionalFigureAny TwoDimensionalFigure which has a well defined interior and exterior.
 EntityThe universal class of individuals. This is the root node of the ontology.
 GeometricFigureThe class of all geometric figures, i.e. the class of all abstract, spatial representations. The instances of this class are GeometricPoints, TwoDimensionalFigures or ThreeDimensionalFigures.
 InternalAttributeAny Attribute of an Entity that is an internal property of the Entity, e.g. its shape, its color, its fragility, etc.
 PolygonA ClosedTwoDimensionalFigure that is composed exclusively of straight lines, i.e. OneDimensionalFigures.
 QuadrilateralAny four-sided Polygon.
 ShapeAttributeAny Attribute that relates to the shape of an Object.
 StructureAttributeEach subclass of StructureAttribute denotes some facet of the structure of physical entities. Each instance of StructureAttribute denotes some structural characteristic that may pertain to some Physical entity.
 TwoDimensionalFigureThe class of GeometricFigures that have position and an extension along two dimensions, viz. plane figures like circles and polygons.
Belongs to Class Entity


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