Regular Polygon

 On the [Model] tab, go to and click ▼ at the side of [Sheet Body] .
Select [Regular Polygon] on the submenu.
 

Click and set the center on the modeling window.

(Alternatively enter the coordinates in the parameter input dialog box, and click .)

 

Click and set the radius.

(Alternatively enter the radius in the parameter input dialog box, and click .)

Enter the number of corners in the parameter input dialog box, and click .

Right click to exit.