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Impossible Triangle





Impossible Circle








This is a so-called "impossible object."

This means that it's impossible to build it.

But drawing it is not impossible, as you see in the image.






All the bumps are identical.
The one in the lower right corner is upside-down,

the image to the right is rotating.







Perpetually ascending staircasehow can the man go up all the time and come back to the same place over and over?





Trying to figure this out can give you a headache!




The red squares are the same color

in the upper part and in the lower part of the "X"






The diagonal lines are parallel.






There are no gray spots at the corners of the squares.







 Parallel lines at sunrise





  The center circles are both the same size.





The vertical lines are both the same length.






Three-Prong Fork





Ambiguous Cubes






There are only white circles at the intersections.

There are no black dots.



  Wavy Squares? No! 
The background of concentric circles makes the squares appear distorted.






Warped Square? 
There are no curved lines in this figure.






The rows of black and white squares are all parallel.

None of them slope.




Are the vertical blocks parallel or straight?




Rotating Wheels 
The circles appear to rotate when you move your head closer and further away from the screen while looking at the dot in the center. 







Optical Illusions Pages

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Copyright Notice

All Web site design of, and the selection and arrangement thereof , 2003-2006 by Sandra Keller and Web site design is protected by US Copyright Laws and cannot legally be used without the written consent of the owner. The copyright of some of the graphics and images incorporated within this Web site are copyrighted by a third party and have been purchased for use on this site. Some others are from the public domain, and all text images were created by the author of this site.









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