You can convert a closed entity into a two-dimensional region. After you create
a region, you can modify it using the various three-dimensional tools. For example,
you can create a region from a square, and then extrude the square to create
a three-dimensional cube.
You can create regions from closed entities, such as polylines, polygons, circles,
ellipses, closed splines, and donuts.
Creating regions typically has no visible effect on a drawing. However, if
the original entity had a width or lineweight, that information is lost when
you create the region.
To create a region
- Do one of the following:
Select the entities to create the region.
- Choose Modify > Region.
- On the Modify toolbar, click the Region tool ().
- Type region and then press Enter.
The command bar displays a message that describes how many regions were
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