So I select DimAngle from the toolbar and click the first of the two angles, but then the command immediately returns the capture below without giving me a chance to select the second line. No duplicate objects or closed curves. Repeatable. Was working fine yesterday… sigh.
So ok, I admit I have the flue, so I must be missing something. This is either a sign I need to go back to bed or that it’s going to be one of those days.