I cannot deselect all of the three options in this panel or in the toolbar , I wonder what I am doing wrong.
Thanks for any help
Thanks so far but I am afraid I have to explain a bit more:
The option is already set when I start a new project (so it seems to be a default). So when I select a new rectangle shape it always has one rounded corner.
Corner roundness is a tool setting that is kept between sessions.You can not deselect all three corner options, one of them will always be active.Here's how to fix the rounded corner issue and return to pointy corners:Open or create a document and make sure nothing is selected.Select the Rectangle tool but do not click in the drawing area.Unlock the "Edit corners together" padlock in Property Bar.Highlight the upper right corner box, type "0" and hit Enter.Lock the padlock again (optional).From now on, all new rectangles should have four pointy corners.
That did the job! Thanks for your help.
Glad I could help.