Circles and squares when placed in a certain combination can create interesting image that can challenge our visual sense.
Look at the diagram below.
Do you see that the lines of the squares are bent?
The lines are actually straight! There are not bent.
The circles are the ones that cause a visual trick to our eyes.
What you see can be deceiving, in this case,
and also to that of the previous post with another mixture of squares and circles.
Enjoy seeing circles and squares!