I want to know how is defined x and y axes in sketch on optional plane.
Origin is projected base origin on this plane but how is defined direction of x and y axes?
In a 2D sketch there is no x and y, only vertical and horizontal.
You can turn on the Triad in System Options > Display / Selection > Display reference triad. This will show the parts x,y,z in the bottom left corner at all times.
In a 3D a line can be related to in terms of x,y&z
I think it follows the following logic: -
Hope it helps!!!
I don' t understant your reply.
I trayed to do same example (in attachment).
Sketch1 = global x and y axes
Sketch2 = x and y axes on new plane
3DSketch2 = z axis for new plane
3DSketch4 = Cros product between z axis for new plane and global x axis
Can you discuss your reply on this example
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