Editing shapes

After I draw a shape with the polygon tool, is it possible to edit it?  I can see how to delete it, but not edit it.  On the Drawing tool page, the only reference to editing is with the Text tool

Yes, but there's only so much you can do. After you've drawn a shape, go to the toolbar and switch to the cursor (Select/Move). Hover over on a line of the polygon or part of the fill. Your cursor should change from one arrow to four smaller ones pointing the cardinal directions. Left click. The color selection palette along with the line width will reappear. You can then change color or line width. What will also happen is your polygon will have a wireframe with squares that you can click and drag to change the length and width of the polygon.

Thanks.   In my case, I was trying to draw an octagon, and missed one of the points.  It sounds like at that point, all I could really do was delete it and draw again.