The Crazy Circle Illusion: How are these dots moving? GeoGeb

[color=#c51414][b]Inspired by[/b][/color] [url]http://sploid.gizmodo.com/all-the-white-dots-in-this-rotating-circle-are-moving-i-1608517148[/url]. [b][color=#c51414]For more details watch[/color] [/b][url]https://www.youtube.com/watch?v=pNe6fsaCVtI[/url][b][/b] [b][color=#1551b5]GeoGebra week challenge[/color][/b]
 
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