We all have this memorized, right? http://visualizingmath.tumblr.com/post/56087736310/math-is-beautiful-fourcylinder-your-friend …
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@graveolens I've never seen this. Pretty too :) Thanks! -
@fawnpnguyen also check out http://visual.wegert.com/ and http://goo.gl/dCLIQ3
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