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Namespace: Autodesk.Revit.DB Class: PlanarFace

PlanarFace.FaceNormal

Property
Description:
Normal of the planar face.
Remarks:
This property is the "face normal" vector, and thus should return a vector consistently pointing out of the solid that this face is a boundary for (if it is a part of a solid).
Syntax
public XYZ FaceNormal { get; }