First of all I'm completely new to Expression Design, so I really hope I'm not asking a question that is too obvious ... maybe if I knew the correct terminology I could find the answer in the Help files, but at present I can't, so here goes.

Back in the day I used to use Autosketch to create architectural drawings, and it had a very useful facility which allowed you to "break" lines at intersection points. So for instance draw 1 vertical line, then draw another line at say 40 degrees which crosses
the first, then draw a third line at some other angle which crosses the first two, so we have 3 unrelated line segments which intersect giving a "central" triangle and 6 scrappy ends. In Autosketch I could use the "break" function to neatly wipe out the
lines beyond the intersection points, and the resulting triangle would have neatly pointed corners.

Can I do this in Expression Design? I'm finding the job of tidying up those corners really difficult!

And of course my problem isn't really about drawing three lines at given angles - it's about breaking off "unused" segments of lines in more complex scenarios, but not having to zoom in and tidy up individual pixels afterwards!

Thanks for any help.

Ade