on two lines to one line
how to do
Make sure lines are collinear (you can add the relation to be sure). Then select that point in the middle and press delete.
Why not just delete one of the lines and make the other longer?
Classic....so many people forget. I reminded a coworker on this just yesterday...
It also depends on the vector direction of the lines.
Arcs are the same - however they would need to be co-radial.
Yes that is a critical/important thing.
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