Cad - break part into line segments

Say for example I make a box, rotate it and add a few other dimensions. Is there a way to break it so it's line by line? I use the measure tool to measure a line on an angle but it's not exact and I need to be as close as possible.
Or is there a way to snap to an intersection (not grid)?
thanks

 

If you wanted a 6” line and you know the angles you could add guidelines at the angles, snap a 6” box to that angled guideline and then draw a single line and snap it to the corner guidelines of the 6” box?

Or just rotate the box, add guidelines to each corner and snap to the corners?

 

If you do a lot of that consider getting a cad program like Autocad. I still use it for geometrical shapes as I find it much easier/faster to draw with than TM Cad. Then export the DXF.

 

I have another cad program i use a lot, but its kind of pain to have certain files below to this cad and certain files below to that cad