you can add colinear relationship to your rectangle and planes
Tx for your reply
Here is what I get, if I click on an edge, and top plane, being in the 2D sketch : a property box, but not a relation box.
If I am in the prt, I get no box at all.
As said upper, a 2D sketch seems to have a pre-defined local frame, and this is really boring.
And I just tried, with a rectangle, in face plane.
Then OK, I get a relation box, and I can stick one edge on the top plane.
But this kind of trivial case isn't the case where I am : my 2d Sketch is on a plane, which is normal to a curve, given by an intersection of 2 not totally trivial surfaces.
And then, SW says : "here your properties, buddy : a line, and a plane. Are you happy with that ?"