See if you guys can figure this out (if I can get it to post)

Whoa, that's trippy...but I am entirely to tired from work to try and figure it out.

Isn't this just an illusion? Like its really hard to see but the line in the middle is actually not straight and it throws everything off? They've just tried to hide it with thicker lines and what not?

Take two decks of playing cards. Make yourself an 8x8 square. Then try and make it a 5x13 it won't work.

The way they cut the squares gives them an extra. In reality the surface area is the same only the pieces are smaller.

I believe that is what is going on.

Ahh, the internet is my brain....

http://www.cut-the-knot.org/Generalization/CevaPlus.shtml#bam

I read taz's page twice, and still don't get the answer, and I enjoy math.

Just look at the thickness of the lines in the second image. See how they are thicker? there is a slight overlap on each shape and together the sum of the overlap is one square