creates single-part and multipart polygon features. You create them by clicking the map or right-clicking and specifying x,y,z coordinates, and using tools on the construction toolbar and constraints on the (right-click) context menu, When you work with z-enabled 3D polyline features, vertices are assigned the current z-coordinate elevation setting. You can set the z-value on the Polygon features are fully enclosed areas bound by straight line segments, circular arcs, elliptical arcs, and Bézier curves created between vertices. They are used to represent natural and as-built features that have closed planar regions. Examples include lakes, vegetation boundaries, building footprints, and so on. Multipart polygon features are used to store one or more polygons as a single polygon feature with one set of attributes. For example, you can create a series of noncontiguous island polygons and store them as one island feature. You can mix singlepart and multipart features on the same layer. . As you create the feature, you can right-click and use the context menu to specify x,y,z coordinate locations for vertices, or specify constraints that lock segments to a specified distance or direction. pane and create a new feature class. If you intend to create z-enabled 3D features, define this capability when you initially define the feature class. pane and create a new feature class. If you intend to create z-enabled 3D features, define this capability when you initially define the feature class. Source.