PlanarFaceFaceNormal Property

public XYZ FaceNormal { get; }

Public ReadOnly Property FaceNormal As XYZ
	Get

public:
property XYZ^ FaceNormal {
	XYZ^ get ();
}

member FaceNormal : XYZ with get

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).