| Definition | Type | Referenced Entity | 
|---|
| IfcAssociatedSurface | FUNCTION | IfcSurface | 
| IfcAxis1Placement | ENTITY | IfcRepresentationItem | 
| IfcAxis1Placement | ENTITY | IfcGeometricRepresentationItem | 
| IfcBaseAxis | FUNCTION | IfcGeometricRepresentationItem | 
| IfcBaseAxis | FUNCTION | IfcRepresentationItem | 
| IfcBuild2Axes | FUNCTION | IfcGeometricRepresentationItem | 
| IfcBuild2Axes | FUNCTION | IfcRepresentationItem | 
| IfcBuildAxes | FUNCTION | IfcGeometricRepresentationItem | 
| IfcBuildAxes | FUNCTION | IfcRepresentationItem | 
| IfcCompositeCurveOnSurface | ENTITY | IfcSurface | 
| IfcConvertDirectionInto2D | FUNCTION | IfcGeometricRepresentationItem | 
| IfcConvertDirectionInto2D | FUNCTION | IfcRepresentationItem | 
| IfcCrossProduct | FUNCTION | IfcRepresentationItem | 
| IfcCrossProduct | FUNCTION | IfcGeometricRepresentationItem | 
| IfcCurveBoundedSurface | ENTITY | IfcSurface | 
| IfcExtrudedAreaSolid | ENTITY | IfcRepresentationItem | 
| IfcExtrudedAreaSolid | ENTITY | IfcGeometricRepresentationItem | 
| IfcFaceSurface | ENTITY | IfcSurface | 
| IfcFirstProjAxis | FUNCTION | IfcRepresentationItem | 
| IfcFirstProjAxis | FUNCTION | IfcGeometricRepresentationItem | 
| IfcGeometricRepresentationItem | ENTITY | IfcSurface | 
| IfcGeometricSetSelect | SELECT | IfcSurface | 
| IfcGetBasisSurface | FUNCTION | IfcSurface | 
| IfcHalfSpaceSolid | ENTITY | IfcSurface | 
| IfcLayeredItem | SELECT | IfcRepresentationItem | 
| IfcMirroredProfileDef | ENTITY | IfcGeometricRepresentationItem | 
| IfcMirroredProfileDef | ENTITY | IfcRepresentationItem | 
| IfcNormalise | FUNCTION | IfcRepresentationItem | 
| IfcNormalise | FUNCTION | IfcGeometricRepresentationItem | 
| IfcOrthogonalComplement | FUNCTION | IfcGeometricRepresentationItem | 
| IfcOrthogonalComplement | FUNCTION | IfcRepresentationItem | 
| IfcPcurve | ENTITY | IfcSurface | 
| IfcPointOnSurface | ENTITY | IfcSurface | 
| IfcRectangularTrimmedSurface | ENTITY | IfcSurface | 
| IfcRepresentation | ENTITY | IfcRepresentationItem | 
| IfcRepresentationItem | ENTITY | IfcGeometricRepresentationItem | 
| IfcRevolvedAreaSolid | ENTITY | IfcGeometricRepresentationItem | 
| IfcRevolvedAreaSolid | ENTITY | IfcRepresentationItem | 
| IfcScalarTimesVector | FUNCTION | IfcRepresentationItem | 
| IfcScalarTimesVector | FUNCTION | IfcGeometricRepresentationItem | 
| IfcSecondProjAxis | FUNCTION | IfcRepresentationItem | 
| IfcSecondProjAxis | FUNCTION | IfcGeometricRepresentationItem | 
| IfcShapeRepresentationTypes | FUNCTION | IfcSurface | 
| IfcShapeRepresentationTypes | FUNCTION | IfcRepresentationItem | 
| IfcStyledItem | ENTITY | IfcRepresentationItem | 
| IfcSurface | ENTITY | IfcBoundedSurface | 
| IfcSurfaceCurve | ENTITY | IfcSurface | 
| IfcSurfaceCurveSweptAreaSolid | ENTITY | IfcSurface | 
| IfcSurfaceOfLinearExtrusion | ENTITY | IfcGeometricRepresentationItem | 
| IfcSurfaceOfLinearExtrusion | ENTITY | IfcRepresentationItem | 
| IfcSurfaceOfRevolution | ENTITY | IfcGeometricRepresentationItem | 
| IfcSurfaceOfRevolution | ENTITY | IfcRepresentationItem | 
| IfcSurfaceOrFaceSurface | SELECT | IfcSurface | 
| IfcTopologyRepresentationTypes | FUNCTION | IfcRepresentationItem | 
| IfcVectorDifference | FUNCTION | IfcGeometricRepresentationItem | 
| IfcVectorDifference | FUNCTION | IfcRepresentationItem | 
| IfcVectorSum | FUNCTION | IfcGeometricRepresentationItem | 
| IfcVectorSum | FUNCTION | IfcRepresentationItem |