15 Great Circles
thingiverse
A mathematical illustration demonstrates the meeting point of 15 great circles as addressed in a Math Monday article (http://blog.makezine.com/2012/07/23/math-monday-those-circles-are-great). Further explorations are documented on my blog (http://msraynsford.blogspot.co.uk/2012/07/15-great-circles.html). To replicate the model, 60 semi-circle shapes, equivalent to 10 A4 card sheets, are necessary for accurate assembly.
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