Balls in the Hall

No idea what to call this. Saw AM Stanford playing around with this kind of idea ([url]http://amseastan.tumblr.com/post/138611460510/allergen[/url]). The rectangles are just dilations. The red ball is a constant radius of 1. The green ball was tricky to figure out. How would you make it proportional to the spaceing between the lines?

 

John Golden

 
Resource Type
Activity
Tags
dilation  illusion  optical  perspective 
Target Group (Age)
5 – 19+
Language
English
 
 
 
© 2025 International GeoGebra Institute