Quote Originally Posted by Pooky View Post
The orange shape is set to the left of the green shape instead of on top of it, the triangles are reversed. Stupid question???
Umm, how do you not understand what is initially confusing about this? The pieces all appear to be the exact same dimensions yet by rearranging them there appears to be a decrease in area, which doesn't make sense.

But, really the hypotenuse just pulls in very slightly along its length to compensate for the missing square.