# Constructing a Regular Heptagon Using Lill's Method

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This Demonstration shows how to construct a regular heptagon using Lill's method for solving cubic equations.

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Contributed by: Izidor Hafner (September 2017)

Open content licensed under CC BY-NC-SA

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Reference

[1] G. E. Martin, *Geometric Constructions*, New York: Springer, 1998 p. 45.

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