Create panel > Geometry button > Extended Primitives > Object Type rollout > Gengon button
Create menu > Extended Primitives > Gengon
Tab panels > Objects tab > Gengon Object
Use Gengon to create an extruded, regular-sided polygon with optionally filleted side edges.

Examples of gengons
To create a gengon:
From the Create menu, choose Extended Primitives > Gengon.
Set the Sides spinner to specify the number of side wedges in the gengon.
Drag the mouse to create the radius of the gengon.
Release the mouse, then move it vertically to define the height of the gengon.
Click, then move the mouse vertically to specify the size of the chamfer along the side angles.
Click to finish the gengon.
Tip: In the Parameters rollout, increase the Fillet Segs spinner to round the chamfered corners into fillets.
Edge—Draws the object from edge to edge. You can change the center location by moving the mouse.
Center—Draws the object from the center out.

Sides—Sets the number of sides around the gengon. Higher numbers shade and render as true circles with Smooth on. Lower numbers create regular polygonal objects with Smooth off.
Radius—Sets the radius of the gengon.
Fillet—Sets the width of the chamfered corners.
Height—Sets the dimension along the central axis. Negative values create the gengon below the construction plane.
Side Segs—Sets the number of divisions around the gengon.
Height Segs—Sets the number of divisions along the gengon's major axis.
Fillet Segs—Sets the number of divisions for the edge filleting. Increasing this setting will produce round, filleted corners instead of chamfers.
Smooth—Blends the faces of the gengon, creating a smooth appearance in rendered views.
Generate Mapping Coords—Sets up the required coordinates for applying mapped materials to the gengon. Default=off.
Web Designer - offers freelance web design services, redesign, graphic design, content
management, web development and e-commerce.
LTD