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How to draw these circles? I'm looking for a method which I can do it with Adobe Illustrator. (or draw in GeoGebra and export to illustrator)

enter image description here

(Adapted from dribbble, created by Olaf Muller.)

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up vote 2 down vote accepted

The lighter circles seem to have centers that lie on a common circle $S$, and have radii twice that of $S$.

In GeoGebra, try


and fiddle with the details. The thicker circle that is concentric with the whole picture seems to have the same radius as the others, so you can tack on a


The darker spirals are arcs of the circles that the code for the light circles produces. So try

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wow! you're awesome! thank you so much..! – jiun Dec 10 '12 at 11:24
another question: is it possible to have more spirals in specific sections? please look at the picture. it has some more spirals in 4 sections. – jiun Dec 10 '12 at 11:32

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