Hi, I'm new here and first of all I'd like to say what a brilliant piece of software this is, being an advanced Illustrator and fairly experienced SketchUp user, I was up and running in very little time, very intuitive unlike any other free 2D/3D CAD package out there ...

My questions are:
- how can I draw a wall perpendicular to an angled wall?
- how do I find an angle of an angled wall (generated from a new room drawn based on an imported floor plan)

Also is there a way to draw a wall from a pair of coordinates to naother pair of coordinates? Is there something like magnetic guide lines that can be placed to a particular coordinate?

Thanks in advance for any help or hint.