GeoGebra imitating Kees Visser.[br][br]Leslie Roberts reblogged Shift by Kees Visser this morning. [br][url]http://lesliejroberts.tumblr.com/post/113124674220/nearlya-kees-visser-shift-1976-paint-and-pencil[/url][br]More Kees Visser:[br][url]http://www.galeriepoggi.com/fr/artistes/diaporama/3355/kees-visser[/url][br][br]Inspired a bit of GeoGebra tinkering. May be more to come. It’s actually two patterns, one of triangles and one of right trapezoids. [br][br]Very interesting fractions questions. For an NxN square, which fractions are shown? Which fractions repeat? Can you come up with a formula for the fraction at spot (i,j)?

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