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104.31 Polygons and complex trigonometric identities without complex numbers
Published online by Cambridge University Press: 08 October 2020
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References
Mustonen, S., Lengths of edges and diagonals and sums of them in regular polygons as roots of algebraic equations, https://www.survo.fi/papers/Roots2013.pdf, 2013Google Scholar
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Hadamard, J., Lessons in geometry: plane geometry, American Mathematical Society (2008).Google Scholar