2012

Table Of Contents
To define regions by using boundaries
1 Click Home tab Draw panel Boundary.
2 In the Boundary Creation dialog box, in the Object Type list, select
Region.
3 Click Pick Points.
4 Specify a point in your drawing inside each closed area that you want to
define as a region and press Enter.
This point is known as the internal point.
NOTE You can make a new boundary set to limit the objects used to
determine the boundary.
To combine regions by adding
1 Click Home tab Solid Editing panel Union.
2 Select one region for the union.
3 Select another region.
You can select regions to unite in any order.
4 Continue selecting regions or press Enter to end the command.
The command converts the selected regions to a new combined region.
To combine regions by subtracting
1 Click Home tab Solid Editing panel Subtract.
2 Select one or more regions from which to subtract and press Enter.
3 Select the region to subtract and press Enter.
The areas of the second regions you selected are subtracted from the areas
of the first regions.
736 | Chapter 18 Create Objects