Selects objects within a circular area.
-
Main Toolbar > (Circular Selection Region), on the Selection Region flyout
You can use Circular to select either objects that are completely within the selection region (window method), or objects that are either within or touched by the selection shape (crossing method). Toggle between the window and crossing selection methods by using the Window/Crossing toggle on the main toolbar.
Note: If you hold down 
while specifying a region, the affected objects are added to the current selection. Conversely, if you hold down 
while specifying a region, the affected objects are removed from the current selection.
while specifying a region, the affected objects are added to the current selection. Conversely, if you hold down while specifying a region, the affected objects are removed from the current selection. Procedures
To select using a circle:
- Click (Circular Selection Region).
- Drag in a viewport, then release the mouse. The first location you click is the center of the circle, where you release the mouse defines the circle's radius.
To cancel the selection, right-click before you release the mouse.