Hi Nicol, No, the line running from left to right and the line running from front to back are completely different. They are perpendicular to each other. That means running in two completely different directions. Let me give you a simple example maybe you can under stand. On a piece of paper you draw a line from left and right, east and west, that represents the x axis of the plane. Now, lets draw a line running from top to bottom of the paper that runs North and South and call that axis y. At this point we have your cross shape that points to the four compass directions North, South, East, and West. Finally, we are going to add a third dimension to this sheet of paper by driving a stake through the center of that cross. We now have a new axis running from floor to ceiling and we will call that axis z. When we get done we have three lines all pointing to six different cardinal directions East, West, North, South, floor, and the ceiling. Make sense?
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