On Solidworks, I would like to create a reference surface (a plane) on a cylinder, but I can't do it because it asks me for several references, a first one that must be tangent and it's after that that it gets stuck.
@SebastiebSxs why create a plane at the axis of the room, was the part not built in relation to the already existing planes, namely Face Dessus Droite?
In this case, there is no need to create a new plan, simply select one of the three existing planes by default in SolidWorks (to do this, look at @echaumet image)