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I'm a beginnner with Blender and I try to train myself watching videos tuts, but today I'm confronted with a small problem that I can't find the answer.

As the pictures describe better than the words, I made a small picture describing my problem.

My problem is that I can't get a UV Map with the right size and the correct deformation. I tried several things but I can't do it. Could you please help me to fix my problem and especially to understand how to do it.

enter image description here


marked as duplicate by cegaton, Duarte Farrajota Ramos, David May 28 '18 at 21:09

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