polygon

A polygon is a type of geometryA geometry is a geometric shape, such as a point, polyline, or polygon, that contains one or more coordinates and a spatial reference.Learn more containing an array of rings and a spatial referenceA spatial reference is a set of parameters, typically defined by a WKID, that define the coordinate system and spatial properties for geographic data. Applications use a spatial reference to correctly display the position of geographic data in a map or scene.Learn more. Each ring in a polygon contains an array of pointA point is a type of geometry containing a single set of x,y coordinates and a spatial reference.Learn more coordinates, where the first and last point are the same. In most cases, a polygon is composed of a single ring of points, but it can also contain many rings representing independent areas or holes. To create a topologically correct polygon, exterior rings are oriented clockwise, and interior rings (holes) are oriented counter-clockwise. Point coordinates are expressed as x,y values. Each coordinate can also optionally include a 'z' value for height and / or an m value for measure (commonly used for linear referencing). When a ring in a polygon is selected, all rings are highlighted.