Hi ed, so for a simple case with just a few pieces there would be 2 main ways to do it.

#1 is like Colin writes above - use View > CPlane to set the construction plane to the center of one of your angled planar shapes. This will relocate the Top/Front/Right views to that local frame of reference and now when you export a PDF, AI, or DXF file using the Top view projection it will be a straight-down view on that particular plane.

#2 is to dissassemble your object using Edit > Separate and then use Transform > Orient to relocate each face onto the world xy plane.

- Michael