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Im making an existing house model for a client. I have the topo overlaid on my start of a model. In the image you can see the plan is oriented to True North. So I want to get the project north to be such that the house is square in my working space so Im not building a model on an angle.  Im sorry, but I cannot figure out how to do that. If I set the window to Project north, its just at this wacky angle neither upright or square. And all Im allowed to do is rotate the true north, while  rotating project is not helpful either as it just gives me 90, 180 degrees etc.    what is the step after aligning true north (as the pic shows), so as to get my project north sitting square?...