Sequential Circles
Another sketch inspired by Geometry Daily. #410, at http://bit.ly/gd410.
The sketch was an opportunity for me to practice using the Sequence command and lists in GeoGebra. There is a think aloud blogpost for this sketch at the blog. http://mathhombre.blogspot.com/2013/04/sequential-circular-reasoning.html
More GeoGebra at mathhombre.blogspot.com.