Tangent Corner > Tangent Corner
Optical Illusion.
David Jatt:
These things always mess with my head!
Tweakie.CNC:
Another illustration on the same theme where the squares marked X are exactly the same shade of grey.
Tweakie.
Overloaded:
Still amazes me every time I pass it on.
Thanks again, Tweakie,
Russ
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