Polygon by Center command bar

Style: Sets the active style.
Line Color: Sets the drawing color. You can click the More option to define custom colors with the Color dialog box.
Line Type: Sets the drawing line type and style.
Line Width: Sets the line width.
By Vertex: Specifies that the polygon is drawn by center and vertex. This option circumscribes a circle about the polygon.
By Midpoint: Specifies that the polygon is drawn by center and midpoint of a side. This option inscribes a circle in the polygon.
Sides: Specifies the number of sides for the polygon.
Distance: Specifies the distance between the center of the polygon and the vertex or midpoint.
Angle: Specifies the angle of the polygon. Zero degrees is horizontal to the x axis. The angle increases in the counterclockwise direction.