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Constructible polygons:
3-gon
4-gon
5-gon
6-gon
7-gon approx
8-gon
9-gon approx
10-gon
11-gon approx
12-gon
13-gon approx
14-gon approx
15-gon
16-gon
17-gon
18-gon approx
19-gon approx
20-gon
34-gon
51-gon
85-gon
255-gon
