I'm working on a disk-shaped part that has two holes, the
axes of which are parallel to the disk's axis. In detailing the
drawing, I want to show the angular relationship of the holes using
the disk's axis as the angle's vertex. I tried adding centermarks
(from the 'annotations' toolbar) to the holes' centers and the
disk's axis and then dimensioning between these, but all I can get
are orthographic dimensions. How can I get the angular dimension?