2017 Boreham Wood formation
|
Reconstruction of the 2017 Boreham Wood formation | ||
| 1. |
| Draw a circle. Draw the horizontal and vertical centerlines. |
| 2. |
| Construct the inscribed hexagon (regular 6-sided polygon) of circle 1, pointing up. |
| 3. |
| Construct the inscribed circle of hexagon 2. |
| 4. |
| Construct the circumscribed heptagon (regular 7-sided polygon) of circle 3, pointing down. |
| 5. |
| Construct the circumscribed circle of heptagon 4. |
| 6. |
| Draw a line from the center of circle 1 to the mid-point of the upper righthand side of hexagon 2. |
| 7. |
| Draw the connecting line between the lefthand and righthand intersections of hexagon 2 and heptagon 4, both second from the top, as shown. |
| 8. |
| Construct a circle concentric to circle 1, passing through the intersection of lines 6 and 7. |
| 9. |
| Construct the inscribed heptagon of circle 8, pointing to the right. |
| 10. |
| Construct a circle concentric to circle 1, passing through the intersection of line 6 and heptagon 9. |
| 11. |
| Construct the inscribed heptagon of circle 10, pointing down. |
| 12. |
| Construct a circle centered at the lower angular point of heptagon 11, passing through its rightmost angular point. |
| 13. |
| Copy circle 12 six times, to the other angular points of heptagon 11. |
| 14. |
| Draw the connecting line between the lower lefthand and righthand innermost mutual intersections of circles 13, as shown. |
| 15. |
| Construct a circle concentric to circle 1, tangent to line 14. |
| 16. |
| Construct the inscribed hexagon of circle 15, pointing up. |
| 17. |
| Draw a line from the center of circle 1 to the upper righthand angular point of heptagon 11. |
| 18. |
| Construct a circle centered at the intersection of circle 15 and line 17, tangent to line 6. |
| 19. |
| Copy circle 18 to the center of circle 1. |
| 20. |
| Copy circle 18 another three times, to the upper lefthand and righthand, and to the lower angular points of hexagon 16. |
| 21. |
| Construct three pairs of parallel lines, all tangent to circle 19, and each tangent to one of the circles 20, all at both sides, as shown. |
| 22. |
| Construct the "two-points" circle (defined by the two end-points of a centerline) between the center of circle 18 and its upper intersection with line 17. |
| 23. |
| Construct a circle concentric to circle 1, passing through the center of circle 22. |
| 24. |
| Copy circle 22 to the upper intersection of circle 12 and the vertical centerline. |
| 25. |
| Construct a circle concentric to circle 12, tangent to circle 24 at the upper side. |
| 26. |
| Copy circle 25 six times, to the centers of circles 13. |
| 27. |
| Copy circle 22 to the lower intersection of circle 3 and the vertical centerline. |
| 28. |
| Construct a circle concentric to circle 1, tangent to circle 27 at the lower side. |
| 29. |
| Circles 1, 3, 5, 8, 12, 13, 23, 25, 26, and 28, hexagon 16, and lines 21, are used for the final reconstruction. |
| 30. |
| Remove all parts not visible within the formation itself. |
| 31. |
| Colour all areas corresponding to standing... |
| 32. |
| ...or to flattened crop, and finish the reconstruction of the 2017 Boreham Wood formation. |
| 33. |
| The final result, matched with the aerial image. |
| Copyright © 2017, Zef Damen, The Netherlands |
