Can’t connect the lines in a sketch. Please help

Hi everyone,

I want to make a chair where the back where you lean on is curved. I’m trying to connect the lines on a sketch but due to the curved line which lays a bit more „inside“ I can’t connect the ends.
What am I doing wrong? Many thanks in advance for your help and any Tipps you may have!


You shouldn’t try to sketch this shape in this way, instead use bodies in 3D, as well as loft, revolve, and other tools.

Here are some useful tutorials which should help:

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