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Namespace: Autodesk.Revit.DB Class: PlanarFace

PlanarFace.XVector

Property
Description:
The X-vector of the planar face.
Remarks:
Note 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.
Syntax
public XYZ XVector { get; }