2013 Hoden formation
|
Reconstruction of the 2013 Hoden formation | ||
| 1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines. |
| 2. |
| Construct the circumscribed nonagon (regular 9-sided polygon) of circle 1, the mid-point of one side on the upper intersection with the vertical centerline. |
| 3. |
| Construct the circumscribed circle of nonagon 2. |
| 4. |
| Construct the circumscribed nonagon of circle 3, the mid-point of one side on the lower intersection with the vertical centerline. |
| 5. |
| Construct the circumscribed circle of nonagon 4. |
| 6. |
| Construct a circle centered at the upper intersection of circle 1 and the vertical centerline, tangent to circle 5 at the upper side. |
| 7. |
| Copy circle 6 to the center of circle 1. |
| 8. |
| Construct a circle centered at the top of nonagon 4, passing through the adjacent righthand (and lefthand) angular point(s). |
| 9. |
| Copy circle 8 to the center of circle 1. |
| 10. |
| Construct a circle centered at the lower intersection of circle 6 and the vertical centerline, tangent to circle 9 at the upper side. |
| 11. |
| Copy circle 10 to the center of circle 6. |
| 12. |
| Construct a circle concentric to circle 1, tangent to circle 11 at the lower side. |
| 13. |
| Copy circle 1 to the center of circle 6. |
| 14. |
| Copy circle 1 to the lefthand intersection of circles 12 and 13. |
| 15. |
| Construct a circle concentric to circle 14, tangent to circle 7 at the far side. |
| 16. |
| Copy circle 10 to the lower intersection of circle 11 and the vertical centerline. |
| 17. |
| Construct a circle concentric to circle 1, tangent to circle 16 at the lower side. |
| 18. |
| Copy circle 15 to the center of circle 6. |
| 19. |
| Copy circle 15 to the righthand intersection of circles 17 and 18. |
| 20. |
| Construct the inscribed nonagon of circle 12, one angular point coincident with the center of circle 14. |
| 21. |
| Copy circles 14 and 15 eight times, to the other angular points of nonagon 20. |
| 22. |
| Construct the inscribed nonagon of circle 17, one angular point coincident with the center of circle 19. |
| 23. |
| Copy circle 19 eight times, to the other angular points of nonagon 22. |
| 24. |
| Circles 5, 14, 15, 19, 21 and 23, are used for the final reconstruction. |
| 25. |
| Remove all parts not visible within the formation itself. |
| 26. |
| Colour all areas corresponding to standing... |
| 27. |
| ...or to flattened crop, and finish the reconstruction of the 2013 Hoden formation. |
| 28. |
| The final result, matched with the aerial image. |
| Copyright © 2013, Zef Damen, The Netherlands |
