Easiest way to do this is with "Contour Flange". Draw the base plate that will be the bottom of your pan. Then, from a "side view" you will draw the 45 degree line and then use Contour Flange to go around the part. It will do the miters for you and you can define miter options in the options dialog for the command. See help on "Contour Flange" for "how to".
Design Manager Streetscape Limited
Solid Edge ST9 [MP8] Classic [x2 seats]