2011

Table Of Contents
You can create regions using the REGION and BOUNDARY commands. You
create composite regions by combining, subtracting, or finding the intersection
of regions.
Objects combined using UNION:
Objects combined using SUBTRACT:
Objects combined using INTERSECT:
Invalid Boundaries
When a boundary cannot be determined, it might be because the specified
internal point is not within a fully enclosed area. Red circles are displayed
around unconnected endpoints of the boundary to identify gaps in the
boundary.
688 | Chapter 18 Draw Geometric Objects