http://s236.photobucket.com/albums/ff177/jsardi56/?action=view¤t=FoldingPaper9-25-07-1.jpg

Fold one corner over diagonally.

The diagonal edge is now 11√2 = 12.02 inches long.

Fold that edge in half and you get 6.01inches

Now, 8 1/2 – 2 1/2 would give you 6. So you would have to take the part that was 2 1/2 long and fold it so that you could mark where 6 inches was.

2) Fold the paper by bringing one corner to the oposite side. This will leave a slanted part and a flap of 3 inches(two layers of paper from the first fold)

3) Fold one of the layers from the flap back over the thick part. The two flap parts will now be 6 inches.

now again from that 8.5 inches subtract 2.5 inches u will get 6 inches

Place the 5.5″ inches of one piece along one side of the 8.5″ giving you 3″ (8.5″ – 5.5″) and fold to mark the 3 inches.

Use two three inches to get 6 inches.