Note: For a polygon to be topologically correct, exterior rings should be clockwise and interior rings should be counterclockwise. If there is ever a doubt about the topological correctness of a polygon, call the GeometryEngine.SimplifyAsFeature method to correct any issues.
The boundary of a polygon is the collection of rings by which the polygon is defined. The boundary contains one or more outer rings and zero or more inner rings. An outer ring is oriented clockwise while an inner ring is oriented counter-clockwise. Imagine walking clockwise along an outer ring. The area to your immediate right is the interior of the polygon and to your left is the exterior. Similarly, if you were to walk counter-clockwise along an inner ring, the area to your immediate right is the interior of the polygon and to your left is the exterior.
A Polygon is based upon the parent Geometry class. The Geometry class is immutable which means that you can not change its shape once it is created. If you need to modify a Polygon once it has been created, use the PolygonBuilder class instead. The PolygonBuilder.ToGeometry method will provide you with the Polygon object.
System.Object
ArcGIS.Core.Geometry.Geometry
ArcGIS.Core.Geometry.Multipart
ArcGIS.Core.Geometry.Polygon
Target Platforms: Windows 10, Windows 8.1, Windows 7