There is no special reason to choose the horizontal over the vertical as the initial designation: the two directions are on par in this respect.
The X-axis and the Y-axis are on par in this respect. There is no special reason to choose the horizontal over the vertical as the initial designation.
There is no special reason to choose the horizontal over the vertical as the initial designation. The X-axis and the Y-axis are on par in this respect.
There is no special reason to choose the horizontal over the vertical as the initial designation. The X-axis and the Y-axis are on par in this respect.