Angular Dimensioning

I am trying to dimension the angle between two lines, but I don't necessarily want the interior angle. No matter what side of the lines I place the dimension, it just shows the interior angle. Is there a setting somewhere to allow me to show the angle I want?

Thanks

After starting the dimangular command, look at the command line, hitting enter will get you 'specify vertex', now pick where the line intersects and then pick the endpoints (etc) of the two lines.

Perfect! I'm so used to just using the buttons for that command that I never looked at the command line.

Thanks