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How to create a heptagon or heptagram with 99.992% accuracy only using a ruler and compass

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Xuất bản 09/08/2016
In case you ever run into a situation where you need to draw an accurate heptagram, and you only have a ruler and compass, this tutorial might be of help. Thanks to GeoGebra.org that made it possible to verify the accuracy using vector graphics. Some other nice reads: - A tuning system that is not arbitrary: http://www.schillerinstitute.org/fid_91-96/fid_911_jbt_tune.html - Funny characteristics on number sequences applying numerological counting: http://www.youtube.com/watch?v=Fbyc9JW3vtk
drawing construction sacred geometry ruler and compass heptagon heptagram