(subclass ClosedTwoDimensionalFigure TwoDimensionalFigure) | Merge.kif 17831-17831 | Closed two dimensional figure is a subclass of two dimensional figure |
(subclass Polygon ClosedTwoDimensionalFigure) | Mid-level-ontology.kif 4871-4871 | Polygon is a subclass of closed two dimensional figure |