2021 Buchendorf (Germany) formation
|
Reconstruction of the 2021 Buchendorf (Germany) formation | ||
| 1. |
| Draw a circle. Draw the horizontal and vertical centerlines. |
| 2. |
| Construct the inscribed nonagon (regular nine-sided polygon) of circle 1, pointing to the right. |
| 3. |
| Construct the inscribed circle of nonagon 2. |
| 4. |
| Construct two inscribed equilateral triangles of circle 3, one pointing to the left, one to the right. |
| 5. |
| Construct a circle concentric to circle 1, passing through the intersections of triangles 4. |
| 6. |
| Construct the inscribed nonagon of circle 5, pointing to the right. |
| 7. |
| Construct the inscribed circle of nonagon 6. |
| 8. |
| Construct a circle, tangent to the leftmost two sides of triangles 4, and tangent to circle 7 at the outer side. |
| 9. |
| Copy circle 8 to the center of circle 1. |
| 10. |
| Construct a circle centered at the rightmost angular point of triangles 4, tangent to circle 1 at the righthand side. |
| 11. |
| Copy circle 10 five times, to the other angular points of triangles 4. |
| 12. |
| Construct the inscribed equilateral triangle of circle 7, pointing to the right. |
| 13. |
| Copy circle 10 three times, to the angular points of triangle 12. |
| 14. |
| Circles 1, 3, 5, 7, 9, 10, 11, and 13, are used for the final reconstruction. |
| 15. |
| Remove all parts not visible within the formation itself. |
| 16. |
| Colour all areas corresponding to standing... |
| 17. |
| ...or to flattened crop, and finish the reconstruction of the 2021 Buchendorf (Germany) formation. |
| 18. |
| The final result, matched with the aerial image. |
| Copyright © 2021, Zef Damen, The Netherlands |
