Basic Double Cycloid

Defined geometrically, this shows a two-locus Spirograph. Sliders a and b control the ratio of the rolling circles radii to the boundary circle. Negative ratios put them outside. Slider n controls how many times the circles roll around the boundary circle.


John Golden

Resource Type
cycloid  mathart  spirograph 
Target Group (Age)
6 – 10
English (United States)
© 2018 International GeoGebra Institute