The Public Paperfolding History Project

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Dividing an Angle into Three Equal Parts
This page attempts to record what is known about the origin and history of the technique of dividing an angle into three equal parts by means of paperfolding. Please contact me if you know any of this information is incorrect or if you have any other information that should be added. Thank you.



'Geometrie, Dessin et Travaux Manuels - Cours Moyen', produced under the direction of M E. Cazes, which was published by Librairie Ch. Delagrave in Paris in 1895, contains a metod of dividing an angle into thirds by eye alone rather than geometrical construction.