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2006-5-03
Diagonal of a cube
060501a.cg3
060501a.pdf
060501b.cg3
Folding up 6 pyramids to make a cube
060502a.cg3
060502b.cg3
Truncate a polyhedron to make some Archimedean solids
060503a.cg3
060503b.cg3
060503d.cg3
similar figures
pictures scaled horizontally and vertically with different factors
pictures scaled horizontally and vertically with same factor