Share Email Facebook Twitter LinkedIn Arc.Normal Property Returns the normal to the plane in which the arc is defined.Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.3.0.0 (26.3.0.0) Syntax C# public XYZ Normal { get; }Property ValueXYZ See AlsoReferenceArc ClassAutodesk.Revit.DB Namespace