Drawing precise polygons
The Measurements Toolbar displays the radius after setting the center point of a polygon. Use the Measurements Toolbar to enter an exact radius and number of segments.
Specifying a Radius
The Measurements Toolbar's label indicates 'Radius' after you place the center point of the polygon. Type the radius size in the Measurements Toolbar, after placing the center point, and press the Enter (Microsoft Windows) or Return (Mac OS X) key. You can perform this action either during or immediately following the creation of the polygon. For example: 24r or 3'6"r or 5mr.
Specifying the Number of Sides
The Measurements Toolbar's label indicates 'Sides' when the Polygon tool is initially activated. Specify the number of sides in the Measurements Toolbar, and press the Enter (Microsoft Windows) or Return (Mac OS X) key, before clicking to set the center point of the polygon. For example: 10.
You can also specify the number of sides in a polygon immediately after the creation of the polygon. Type the number of sides in the Measurements Toolbar, followed by the letter s, and press the Enter (Microsoft Windows) or Return (Mac OS X) key. For example: 6s. This number will be applied to any future polygons.