If you don't mind using a different tool then a flat (zero pitch) roof will show the angled sides in plan.
So long as you have true 3D projection turned on for roofs in the project preferences.
In 15 I think the roof is the only tool that has the option for a true 3D top view projection in plan.
All other tools show only a representation of the top surface.
Slanted walls and columns will also show correctly.
Barry.
One of the forum moderators.
Versions 6.5 to 27
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