Create line from point divided

[duchoabn]

Hi All,
I have two curves are polyline and I divided them by distance, then create Line from two points. But it not same as I want.

1. How I can make line same as red line in pictures?
2. Or If I have one red line at corner: How I can copy it from along one curve (polyline) by distance?
   Thanks so much!
   Please see my picture

[Dani_Abalde]

It seems that the polylines have different directions so try flipping one of them. Also make sure that the seams of both curves are aligned.