; Regular polytopes, Dover Edition 1973 , p | ; Regular polytopes, Dover Edition 1973 , p |
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Russell, Bertrand, , reprint edition, Routledge, 2004, p | Hospers, John, , 4th ed, Routledge, 1997, p |
8 9 10 11 The simplest polygon such that the regular form cannot be constructed with compass, straightedge, and | Hospers, John, , 4th ed, Routledge, 1997, p |
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Jack, , Longman, 1983, p | McCormick, John Francis, , Loyola University Press, 1928, p |