Actually it is quite simple... but, I was stumped at first... then I felt like a dork.
If you fold a sheet of paper in half... a mountain fold would result in the edges of the paper touching the table while the fold (or peak of the mountain) is in the air.
A valley fold would be just the opposite.
a Mountain fold looks like this ^ and a valley fold looks like this V
a series of repeating mountain and valleys would give you an accordian fold.
The reason they use these terms is so you know which way to make the fold... so the edges point up or down
Now that was WAY to verbose of an explanation... I wish I had better graphics.. but I hope that helps.
__________________ Kathleen(Kack)-
|