I think it deserves to be said explicitly, even if for the umpteenth time:
The absense from SU of an angular dimensioning tool is incomprehensible. That the SU team saw fit to remedy this omission by relegating angular dimensions to 2D media only is likewise incomprehensible, particularly since rotating objects, thereby establishing angular relationships between them, is one of SU’s basic 3D functions. There’s no question that angularity is a 3D attribute. To my knowledge, there has to date been no rationale offered by the SU team.
-Gully