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KGS math club/solution 11 8

Revision as of 04:57, 30 August 2011 by Maproomad (talk | contribs) (Answer to "derived graph" puzzle.)
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(i) A pentagram - or, equivalent as a graph, another pentagon.

(ii) Two disjoint tetrahedra.

(iii) A great icosahedron - or, equivalent as a graph, another icosahedron.

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