When this image is flipped, it reveals a totally different picture.
This square is actually perfectly drawn. It's the circles which make it look strange.
Which can you see? Or can you see both an Eskimo and an Indian?
Can you see a young or old woman? Look closely, they're both there!
There are actually no black spots in this image...
Squares A and B are actually the same shade.
Is this image really moving?
Believe it or not, there are only two colors used in this picture!
How many legs does this elephant have?
Looks like a normal triangle doesn't it? Well in fact, this would be impossible to construct.
How many 3D cubes can you see?
Although it looks like both lines are of different lengths, they are in fact equal.
These two parallel lines are in fact both straight!
Are these lines straight and parallel? Believe it or not, but the answer is yes!
This shape would be impossible to build.