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Constructible polygon
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===Gallery=== [[File:Regular_Pentadecagon_Inscribed_in_a_Circle.gif]] [[File:Regular Heptadecagon Using Carlyle Circle.gif|257px]] [[File:Regular 257-gon Using Carlyle Circle.gif]] [[File:Regular 65537-gon First Carlyle Circle.gif|257px]]<BR> From left to right, constructions of a [[pentadecagon|15-gon]], [[heptadecagon|17-gon]], [[257-gon]] and [[65537-gon]]. Only the first stage of the 65537-gon construction is shown; the constructions of the 15-gon, 17-gon, and 257-gon are given completely.
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