Share Email Facebook Twitter LinkedIn PlanarFace.XVector Property The X-vector of the planar face.Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.2.0.0 (26.2.0.0) Syntax C# public XYZ XVector { get; }Property ValueXYZ RemarksNote that the cross product of X-vector and Y-vector may result in the reverse of the FaceNormal vector depending upon how Revit has structured this particular face. See AlsoReferencePlanarFace ClassAutodesk.Revit.DB Namespace