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: -
- Global Y Axis (0,1,0) is taken as the sketch Y and sketch Z is always pointing outwards the face. X can then be computed through the Right Hand Cross Rule.
- If Global Y is normal to the plane then it takes the Global X (1,0,0) as the sketch X, Sketch Z is again pointing outwards the face on which the sketch is placed. Sketch Y is computed through the cross rule.
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
Coordonat System.SLDPRT.zip 55.1 KB