Autodesk Inventor Users

you can end a two-dimensional sketch at a projected point, and then select the path-segments you need.

But I would recommend you make two, two-dimensional sketches and after those make one three-dimensional sketch in which you use the two previous sketches. (there's a command to make a 3d-projected line from two curves.)

I agree with Phil Green. I have not uploaded the file here because I am still up to date, but I have replaced it with pictures.

This is a very good question

Thank you @정성원 That helped a lot.

For anyone that this is still unclear for.

1. Make your sketches
2. Make a 3D sketch and select Intersection Curve and select the 2D sketches you want to involve in your 3D sketch
3. In this case that was two 2D sketches which made this curve
4. Then select the sweep function and select the pipe as the profile and the 3D sketch as the path.
5. Nice pipe

Nice, You should uppload the whole process as a Tutorial!!!

Tony Andre Stuvik: I've seen your wonderful educational use! :)

I'm not good at that.

And there is one thing I would like to add, so I'll add it.

In the original drawing, a line should be added to the round (fillet) part.

If you check the detail option like the image, it will come out with the original drawing. :)

I hope this helps.