Reconstruction of the 2017 Cheesefoot Head formation | ||

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

2. |
Construct the inscribed regular 18-sided polygon of circle 1, pointing to the right. Number the angular points clockwise 1 - 18, starting at the top. | |

3. |
Draw the connecting line between angular point (of polygon 2) nr. 13 and the upper intersection of circle 1 and the vertical centerline. | |

4. |
Construct a circle concentric to circle 1, tangent to line 3. | |

5. |
Draw the connecting line between angular point nr. 12 and the upper intersection of circle 1 and the vertical centerline. | |

6. |
Construct a circle concentric to circle 1, tangent to line 5. | |

7. |
Draw two rays of polygon 2, from the center of circle 1 to angular points nrs. 1 and 18. | |

8. |
Draw the connecting line between angular points nrs. 4 and 14. | |

9. |
Construct a circle centered at the intersection of line 8 and the vertical centerline, passing through the intersections of rays 7 and circle 6. | |

10. |
Construct a circle centered at the upper intersection of circle 1 and the vertical centerline, tangent to the upper side of polygon 2. | |

11. |
Construct a circle concentric to circle 1, tangent to circle 10 at the upper side. | |

12. |
Copy circle 10 to the center of circle 1, and move this circle (copy and delete original) to its own lefthand intersection with the horizontal centerline. See detail. | |

13. |
Construct a circle concentric to circle 1, tangent to circle 12 at the lefthand side. | |

14. |
Copy circle 10 to angular point nr. 18. | |

15. |
Construct a line tangent to circle 13 at the lefthand, and to circle 14 at the righthand side. | |

16. |
Repeat step (14 and) 15 seventeen times, with respect to the other angular points of polygon 2, as shown. | |

17. |
Repeat step 3 seventeen times, with respect to the other angular points of polygon 2, as shown. | |

18. |
Construct a circle centered at the upper intersection of circle 13 and the vertical centerline, passing through the intersections of circle 13 and rays 7. | |

19. |
Copy circle 18 two times, to the intersections of line 15 with circle 6, and with the upper side of polygon 2. See detail. | |

20. |
Construct a line parallel to line 15, tangent to circles 19 at the lefthand sides. | |

21. |
Repeat step (19 and) 20 seventeen times, with respect to the other angular points of polygon 2, as shown. | |

22. |
Circles 4, 6, 9, and 11, and lines 3, 15, 16, 17, 20, and 21, are used for the final reconstruction. | |

23. |
Remove all parts not visible within the formation itself. | |

24. |
Colour all areas corresponding to standing... | |

25. |
...or to flattened crop, and finish the reconstruction of the 2017 Cheesefoot Head formation. | |

26. |
The final result, matched with the aerial image. |

Copyright © 2017, Zef Damen, The Netherlands |