Comments on: Dual polyhedra for kids http://www.johndcook.com/blog/2012/11/14/dual-polyhedra/ John D. Cook Mon, 20 May 2013 01:18:21 +0000 hourly 1 http://wordpress.org/?v=3.5.1 By: Canageek http://www.johndcook.com/blog/2012/11/14/dual-polyhedra/comment-page-1/#comment-3489 Canageek Thu, 15 Nov 2012 18:08:16 +0000 http://www.johndcook.com/blog/?p=12463#comment-3489 More interesting is the fact that that is a d12 on the left, and a d20 on the right. The platonic solids are used for dice in games such as D&D.

Also the d10, which isn’t a platonic solid, but we use it anyway.

]]> By: Shivaram S http://www.johndcook.com/blog/2012/11/14/dual-polyhedra/comment-page-1/#comment-3488 Shivaram S Thu, 15 Nov 2012 15:44:46 +0000 http://www.johndcook.com/blog/?p=12463#comment-3488 Beautiful!

]]> By: g http://www.johndcook.com/blog/2012/11/14/dual-polyhedra/comment-page-1/#comment-3487 g Thu, 15 Nov 2012 01:47:39 +0000 http://www.johndcook.com/blog/?p=12463#comment-3487 In the special case of dual polyhedra, I submit that the Right Way to see that the number of edges is the same for both is to observe that they’re in 1-1 correspondence: the edge shared by faces a,b corresponds to the edge joining vertices A,B.

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