Got to see an awesome exhibit at the Art Institute of Chicago this week featuring Brazilian artist Hélio Oiticica, and a companion exhibit on post 1950 Latin American art on paper. Several of the images were lovely natural arrays of rectangles... so I had to play in GeoGebra.[br][br]Exhibit websites: [url=http://www.artic.edu/exhibition/h-lio-oiticica-organize-delirium]To Organize Delirium[/url] & [url=http://www.artic.edu/exhibition/abstract-experiments]Abstract Experiments[/url]