You now when you have a rectangle you can draw 2 Diagonal lines from corner to corner, one from the top left to the bottom right and one from the bottom left to the top right


Code:
     _______
     |\    /|
     | \  / |
     |  \/  |
     |  /\  |
     | /  \ |
     |/____\|

The line from the top left to bottom right is called the leading diagonal, what's the other one called?