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I'm trying to add an angular dimension in a drawing for a cut. I can't find a way to add an angle that is perpendicular or 90-X degrees from the remaining surface. When cutting the material, it would be much more useful to have the angle to cut off rather than the remaining angle after the...

Since I learned that I should be making my sketches Fully Defined, I've been doing a lot of experimentation and have learned a few tricks here and there - but it would be great if a real expert would do an authoritative video tutorial. For example, why is it that sometimes I can have a...