# Gigagon

Gigagon | |
---|---|

Edges and vertices | 1,000,000,000 |

Schläfli symbol | (using Bowers' arrays) |

Area | |

Internal angle (degrees) | 179.99999964° |

A **gigagon** or **1,000,000,000-gon** is a polygon with 1 billion sides (giga-, from the Greek γίγας gígas, meaning "giant").^{[1]}^{[2]} A gigagon with a radius of 1 ly (approximately the size of 100 solar systems) would have its edge length differ from a circle by 9.78 centimetres (3.85 in). It has the Schläfli symbol (using Bowers' arrays).^{[3]}^{[4]}

## Regular gigagon[edit]

A regular gigagon is represented by the Schläfli symbol {1,000,000,000} and can be constructed as a truncated 500,000,000-gon, t{500,000,000}, a twice-truncated 250,000,000-gon, tt{250,000,000}, a thrice-truncated 125,000,000-gon, ttt{125,000,000}, or a four-fold-truncated 62,500,000-gon, tttt{62,500,000}, a five-fold-truncated 31,250,000-gon, ttttt{31,250,000}, or a six-fold-truncated 15,625,000-gon, tttttt{15,625,000}.

A regular gigagon has an interior angle of 179.99999964°.^{[5]} The area of a regular gigagon with sides of length *a* is given by

Because 1,000,000,000 = 2^{9} × 5^{9}, the number of sides is not a product of distinct Fermat primes and a power of two. Thus the regular gigagon is not a constructible polygon. It is not even constructible with the use of neusis or an angle trisector, as the number of sides is neither a product of distinct Pierpont primes, nor a product of powers of two and three.

## References[edit]

- ↑ Gibilisco, Stan (2003-06-27).
*Geometry Demystified*. McGraw Hill Professional. ISBN 978-0-07-141650-4. Search this book on - ↑ "Geometric Basics for Raytracing - Geometry with POV-Ray - Regular Polygon".
*www.f-lohmueller.de*. Retrieved 2020-12-05. - ↑ Looijen, Prof Dr Ir Maarten.
*Over getallen gesproken - Talking about numbers: Een wiskundige ontdekkingsreis*. Van Haren. ISBN 978-94-018-0469-1. Search this book on - ↑ "Bowers' Array Notation - Allam's Numbers".
*sites.google.com*. Retrieved 2020-12-05. - ↑ "BDMNQR Essays: Math & Science".
*www.erictb.info*. Retrieved 2020-12-05.

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