2020 Etchilhampton formation
|
Reconstruction of the 2020 Etchilhampton formation | ||
| 1. |
| Draw a circle. Draw the horizontal and vertical centerlines. |
| 2. |
| Construct the inscribed hexagon (regular 6-sided polygon) of circle 1, pointing to the right. |
| 3. |
| Construct the inscribed circle of hexagon 2. |
| 4. |
| Construct a "two-points" circle (defined by the two end-points of a centerline) between the upper intersections of circles 1 and 3 and the vertical centerline. |
| 5. |
| Construct a circle concentric to circle 1, passing through the center of circle 4. |
| 6. |
| Copy circle 4 to its own lower intersection with the vertical centerline. |
| 7. |
| Construct a circle concentric to circle 1, tangent to circle 6 at the lower side. |
| 8. |
| Construct a circle centered at the upper intersection of circle 7 and the vertical centerline, tangent to circle 1 at the upper side. |
| 9. |
| Copy circle 8 to the center of circle 1. |
| 10. |
| Construct a circle concentric to circle 8, tangent to circle 5 at the upper side. |
| 11. |
| Copy circle 10 to the center of circle 1. |
| 12. |
| Construct the inscribed hexagon of circle 7, pointing up. |
| 13. |
| Construct a circle centered at the righthand angular point of hexagon 2, passing through the top of hexagon 12. |
| 14. |
| Construct a circle concentric to circle 1, tangent to circle 13 at the lefthand side. |
| 15. |
| Construct a circle centered at the righthand intersection of circle 14 and the horizontal centerline, passing through the top of hexagon 12. |
| 16. |
| Construct the inscribed hexagon of circle 3, pointing to the right. |
| 17. |
| Construct a circle centered at the upper righthand angular point of hexagon 16, passing through the top of hexagon 12. |
| 18. |
| Copy circle 13 five times, to the other angular points of hexagon 2. |
| 19. |
| Construct the inscribed hexagon of circle 14, pointing to the right. |
| 20. |
| Copy circle 15 five times, to the other angular points of hexagon 19. |
| 21. |
| Copy circle 17 five times, to the other angular points of hexagon 16. |
| 22. |
| Circles 1, 3, 5, 9, 11, 13, 14, 15, 17, 18, 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 2020 Etchilhampton formation. |
| 26. |
| The final result, matched with the aerial image. |
| Copyright © 2020, Zef Damen, The Netherlands |
