Create panel > Shapes > Splines > Object Type rollout > NGon
Create menu > Shapes > NGon
Use NGon to create closed flat-sided or circular splines with any number (N) of sides or vertices.
Examples of NGons
Procedure
To create an NGon:
Go to the Create panel and choose Shapes.
Click NGon.
Choose a creation method.
Drag and release the mouse button in a viewport to draw the NGon.
Interface
Mesh Settings and Interpolation rollouts
All spline-based shapes share these parameters. See Splines for an explanation of these parameters.
Creation Method rollout
The NGon shape uses the standard creation methods of Center or Edge. Most spline-based shapes share the same Creation Method parameters. See Splines for an explanation of these parameters.
Parameters rollout
Once you have created an NGon, you can make changes using the following parameters:
Radius: Specifies the NGon radius.
Inscribed: The radius is measured from the center to the corners of the NGon
Circumscribed Radius: the radius is measured from the center to the sides of the NGon.
Sides: Specifies the number of sides and vertices used by the NGon. The range for NGon sides is 3 to 100.
Corner Radius: Specifies the degree of rounding to apply to the corners of the NGon. A setting of 0 specifies a standard unrounded corner.
Circular: When on, specifies a circular NGon.