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by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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148:. Because the configuration is not realizable in the Euclidean plane, four of its lines (the four broken diagonals of the 3×3 array of points) are drawn as curves.
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