About Creating Datum Planes Referencing Imported Faceted Geometry
You can create datum planes referencing imported faceted geometry or a combination of faceted and exact geometry as follows:
• Through a facet face.
• Offset from a facet face.
• Parallel to a facet face and through a facet vertex.
• Normal to a facet face and through two facet vertices.
• Normal to a facet face and through a facet edge.
• Through two parallel facet edges.
• Through a facet edge and a facet vertex.
• Through two facet vertices and angled to a facet face.
• Through three facet vertices.
• Through any combination of facet and exact geometric references for the combinations already listed, for instance, through two facet vertices and one real datum point.