Reconstruction of the 2017 Highworth formation | ||

1. |
Draw a circle. Draw and extend the horizontal and vertical centerlines. | |

2. |
Copy circle 1 two times, to its righthand intersection with the horizontal, and its upper intersection with the vertical centerline. | |

3. |
Draw the connecting line between the intersections of circles 2. | |

4. |
Construct the inscribed dodecagon (regular 12-sided polygon) of circle 1, with one angular point on line 3. | |

5. |
Construct the inscribed dodecagon of circle 1, pointing up. Number the angular points of both dodecagons 4 and 5 consectutively 1 - 24 clockwise, starting at the top. | |

6. |
Construct a circle centered at the lower intersection of circle 1 and the vertical centerline, passing through angular point nr. 8. | |

7. |
Copy circle 6 to angular point nr. 1. | |

8. |
Copy circle 6 to angular point nr. 23. | |

9. |
Copy circle 6 to angular point nr. 21. | |

10. |
Copy circle 6 eight more times, to the other angular points of dodecagon 5. | |

11. |
Construct a circle concentric to circle 1, passing through the righthand intersection of circles 6 and 7. | |

12. |
Construct a circle concentric to circle 1, passing through the righthand intersection of circles 6 and 8. | |

13. |
Construct a circle concentric to circle 1, passing through the upper righthand intersection of circles 6 and 9. | |

14. |
Construct the circumscribed dodecagon of circle 1, pointing up. | |

15. |
Construct the circumscribed circle of dodecagon 14. | |

16. |
Construct the circumscribed dodecagon of circle 15, with the mid-point of one side at the top of dodecagon 14. | |

17. |
Construct the circumscribed circle of dodecagon 16. | |

18. |
Construct a circle centered at the lower intersection of circle 7 and the vertical centerline, tangent to circle 9 at the near side. | |

19. |
Copy circle 18 four times, to the intersections of circle 15 with the horizontal and vertical centerlines. | |

20. |
Construct a circle centered at the righthand intersection of circle 8 and the horizontal centerline, tangent to circle 6 at the near side. | |

21. |
Copy circle 20 to the center of the upper circle 19. | |

22. |
Construct a circle concentric to circle 1, tangent to circle 21 at the upper side. | |

23. |
Construct a circle centered at the upper intersection of circle 12 and the vertical centerline, tangent to circle 11 at the upper side. | |

24. |
Copy circle 23 to the center of circle 21. | |

25. |
Construct a circle concentric to circle 1, tangent to circle 24 at the upper side. | |

26. |
Circles 6, 7, 8, 9, 10, 11, 12, 13, 15, 17, 19, 22, and 25, are used for the final reconstruction. | |

27. |
Remove all parts not visible within the formation itself. | |

28. |
Colour all areas corresponding to standing... | |

29. |
...or to flattened crop, and finish the reconstruction of the 2017 Highworth formation. | |

30. |
The final result, matched with the aerial image. |

Copyright © 2017, Zef Damen, The Netherlands |