2020 Potterne Field formation
|
Reconstruction of the 2020 Potterne Field formation | ||
| 1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines. |
| 2. |
| Construct the inscribed octagon (regular 8-sided polygon) of circle 1, pointing up. Number the angular points clockwise 1 - 8, starting at the top. |
| 3. |
| Draw the diagonal of octagon 2 between angular points nrs. 1 and 4. Repeat this seven times, for angular points nrs. 2-5, 3-6, 4-7, 5-8, 6-1, 7-2, and 8-3. |
| 4. |
| Construct the inscribed circle of the octagon enclosed by diagonals 3. |
| 5. |
| Construct the inscribed circle of octagon 2. |
| 6. |
| Construct a "two-points" circle (defined by the two end-points of a centerline) between the upper intersections of circles 1 and 5 with the vertical centerline. |
| 7. |
| Construct a circle concentric to circle 1, passing through the center of circle 6. |
| 8. |
| Copy circle 6 to its own upper intersection with the vertical centerline. |
| 9. |
| Construct a circle concentric to circle 1, tangent to circle 8 at the upper side. |
| 10. |
| Copy circle 6 to the upper intersection of circle 8 and the vertical centerline. |
| 11. |
| Construct a circle concentric to circle 1, tangent to circle 10 at the upper side. |
| 12. |
| Copy circle 6 to the upper intersection of circle 4 and the vertical centerline. |
| 13. |
| Construct two circles concentric to circle 1, tangent to circle 12 at both sides. |
| 14. |
| Construct a circle concentric to circle 12, tangent to diagonal 1-4 (between angular points 2 nrs. 1 and 4). |
| 15. |
| Copy circle 14 to angular point 2 nr. 1. |
| 16. |
| Copy circle 6 two times, the first to the lower intersection of circle 15, and the second to the upper intersection of the first, both with the vertical centerline. |
| 17. |
| Construct two circles concentric to circle 15, tangent to circles 16 at the upper sides. |
| 18. |
| Copy circles 15 and 17 together to angular point 2 nr. 5. |
| 19. |
| Copy circle 6 to angular point 2 nr. 3. |
| 20. |
| Copy circles 15 and 17 together to the upper intersection of circles 1 and 19. |
| 21. |
| Construct a circle centered at the lefthand intersection of the inner circle 13 and the horizontal centerline, passing through the intersection of diagonals 2-7 and 5-8. |
| 22. |
| Copy circle 6 two times, the first to the lefthand intersection of circle 21, and the second to the righthand intersection of the first, both with the horizontal centerline. |
| 23. |
| Construct two circles concentric to circle 21, tangent to circles 22 at the righthand sides. |
| 24. |
| Copy circle 6 two times, the first to angular point 2 nr. 7, and the second to the lower intersection of the first and circle 1. |
| 25. |
| Copy circles 21 and 23 together to the lower intersection of circle 1 and the lower circle 24. |
| 26. |
| Circles 1, 4, 7, 9, 11, 13, 15, 17, 18, 20, 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 2020 Potterne Field formation. |
| 30. |
| The final result, matched with the aerial image. |
| Copyright © 2020, Zef Damen, The Netherlands |
