Quick Reference

Combines selected regions by addition.

Access Methods


 Ribbon: Home tabSolid Editing panelUnionNot available on the ribbon in the current workspace
 Menu: Modify Region UnionNot available in menus in the current workspace


You can combine two or more 2D regions into a single, composite region. Regions combine only with other region objects that are located on the same plane.

However, you can perform simultaneous UNION actions by selecting sets of regions on different planes. UNION then produces separate, combined regions on each plane.

List of Prompts

The following prompt is displayed.

Select objects

Select the regions to be combined.