Attached is a SolidWorks 2016 file. It is not exact, but it gives the basic shape.
This is one way to create the shape, but I suspect you'd get a different method and result from each response.
AttachmentsSample.SLDPRT, 696 KB
great thank you very much for your help
the 3d model help me a lot
For this shape, you can try projection of a line on that face on which you want to cut and after it you will use sweep method to create cut on face as per your required shape.
thank you for the help sir i already use FredSWUG model to learn how to do this part