We Love Polyhedra! (And So Should You!)
summary
A web app that maps and animates exact transformations between solids actually exists: it uses x3dom and d3 to render and manipulate models, handcrafts the math for about 120 polyhedra, and implements truncate/cut/paste and dual transformations so the shapes morph correctly. Development takes six months, includes unit tests, targets mobile and passes Google Lighthouse checks, and gets uptake from parents and teachers who report kids keep playing and learning.
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