How to attach the edge of those two yellow objects. The right one has to be changed and its edge has to be attached on the edge of the left object. The right one has to be straightly stretched. And there are multiple points in the right one and it is curved.
How to do that?
I cannot find it on the internet, maybe my search words are not right.
When I try to use MatchSrf I cannot select the edges like the people do on the internet. So, probably my lines are not acting as a surface. I thought I can make a surface of lines by using ‘patch’, but still, when I use MatchSrf it does not work like what the internet shows me.
The surfaces you created are trimmed surfaces. MatchSrf can only change untrimmed surfaces. My guess is you made the surfaces using PlanarSrf. You can make untrimmed surfaces using your curves with Loft or Sweep2.