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   TwoDimensionalAngle
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| appearance as argument number 1 |
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| (documentation TwoDimensionalAngle ChineseLanguage "这是任何两个 OneDimensionalFigure(即是 直线)相遇的的单个 GeometricPoint。") | chinese_format.kif 3978-3979 | |
| (documentation TwoDimensionalAngle EnglishLanguage "Any two OneDimensionalFigures (i.e. straight lines) meeting at a single GeometricPoint.") | Merge.kif 17974-17975 | |
| (externalImage TwoDimensionalAngle "http://upload.wikimedia.org/wikipedia/ commons/ b/ bf/ Angle_Symbol.svg") | pictureList.kif 2416-2416 | |
| (externalImage TwoDimensionalAngle "http://upload.wikimedia.org/wikipedia/ commons/ c/ ce/ Angle_measure.svg") | pictureList.kif 2046-2046 | |
| (subclass TwoDimensionalAngle OpenTwoDimensionalFigure) | Merge.kif 17973-17973 | Two dimensional angle is a subclass of open two dimensional figure |
| appearance as argument number 2 |
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| (instance AcuteAngle TwoDimensionalAngle) | Mid-level-ontology.kif 5489-5489 | Acute angle is an instance of two dimensional angle |
| (instance CentralAngle TwoDimensionalAngle) | Mid-level-ontology.kif 5712-5712 | Central angle is an instance of two dimensional angle |
| (instance ObliqueAngle TwoDimensionalAngle) | Mid-level-ontology.kif 5467-5467 | Oblique angle is an instance of two dimensional angle |
| (instance RightAngle TwoDimensionalAngle) | Mid-level-ontology.kif 5478-5478 | Right angle is an instance of two dimensional angle |
| (termFormat ChineseLanguage TwoDimensionalAngle "二维角度") | domainEnglishFormat.kif 59688-59688 | Right angle is an instance of two dimensional angle |
| (termFormat ChineseTraditionalLanguage TwoDimensionalAngle "二維角度") | domainEnglishFormat.kif 59687-59687 | Right angle is an instance of two dimensional angle |
| (termFormat EnglishLanguage TwoDimensionalAngle "two dimensional angle") | domainEnglishFormat.kif 59686-59686 | Right angle is an instance of two dimensional angle |
| appearance as argument number 3 |
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| (domain angleOfFigure 1 TwoDimensionalAngle) | Merge.kif 18002-18002 | The number 1 argument of angle of figure is an instance of two dimensional angle |
| (domain angularMeasure 1 TwoDimensionalAngle) | Merge.kif 18035-18035 | The number 1 argument of angular measure is an instance of two dimensional angle |
| consequent |
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| (=> (and (instance ?T Polygon) (equal ?T RightTriangle)) (exists (?A) (and (instance ?A TwoDimensionalAngle) (angleOfFigure ?A ?T) (equal ?A RightAngle)))) |
Mid-level-ontology.kif 5530-5538 |
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