2014 Green Street formation
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Reconstruction of the 2014 Green Street formation | ||
| 1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines. |
| 2. |
| Construct the inscribed regular 13-sided polygon of circle 1, pointing down. |
| 3. |
| Construct the inscribed circle of polygon 2. |
| 4. |
| Construct the circumscribed regular 13-sided polygon of circle 1, pointing up. |
| 5. |
| Construct a circle centered at the mid-point of the lower side of polygon 4, passing through the lowest righthand angular point. |
| 6. |
| Copy circle 5 to the lower intersection of circle 3 and the vertical centerline. |
| 7. |
| Draw the connecting line between the intersections of circles 3 and 6. |
| 8. |
| Construct a circle centered at the righthand intersection of circle 6 and the lower side of polygon 4, passing through the righthand intersection of circles 1 and 6. See detail. |
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| 9. |
| Copy circle 8 to the intersection of line 7 and the vertical centerline. |
| 10. |
| Construct a circle centered at the righthand intersection of circles 3 and 6, tangent to circle 9 at the righthand side. |
| 11. |
| Construct a circle concentric to circle 6, passing through the righthand intersection of circles 3 and 10. |
| 12. |
| Copy circle 11 twelve times, six to the left, six to the right. The first to the lefthand intersection of circles 3 and 11, then five consecutively to the corresponding intersections, the next one to the righthand intersection of circles 3 and 11, and finally five consecutively to the corresponding intersections, as shown. |
| 13. |
| Copy circle 6 twelve times, to the centers of circles 12. |
| 14. |
| Copy circle 10 two times, to the centers of the upper lefthand and righthand circles 13. |
| 15. |
| Draw two lines, from the center of circle 1, tangent to circles 14 at the inner sides (closest to the vertical centerline), and extend these lines upto circle 3. |
| 16. |
| Copy circle 11 to the center of circle 5. |
| 17. |
| Construct a circle concentric to circle 1, tangent to circle 16 at the upper side. |
| 18. |
| Construct a circle centered at the upper intersection of circle 11 and the vertical centerline, tangent to circle 16 at the upper side. |
| 19. |
| Construct a circle concentric to circle 1, tangent to circle 18 at the upper side. |
| 20. |
| Copy circle 5 to the center of circle 1. |
| 21. |
| Construct a circle concentric to the upper righthand circle 13, passing through the righthand intersection of the upper lefthand circle 13 and circle 1. |
| 22. |
| Construct a circle concentric to the upper righthand circle 13, tangent to the lefthand circle 14 at the righthand side. |
| 23. |
| Construct a circle centered at the intersection of lefthand line 15 and circle 20, passing through the upper intersection of circle 20 and the vertical centerline. |
| 24. |
| Copy circle 23 to the center of circle 1. |
| 25. |
| Construct a line tangent to circles 23 and 24 at the righthand sides, and extend this line down to circle 20. |
| 26. |
| Construct a circle centered at the lower intersection of circle 19 and the vertical centerline, tangent to circle 17 at the lower side. |
| 27. |
| Copy circle 26 to the center of circle 1. |
| 28. |
| Copy circles 21 and 22 to the lower intersection of circle 27 and line 25. |
| 29. |
| Construct a circle centered at the upper intersection of circle 26 and the vertical centerline, passing through the center of circle 18. |
| 30. |
| Copy circle 29 to the intersection of righthand line 15 and inner circle 28. |
| 31. |
| Circles 1, 3, 6, 13, 17, 19, 20, 28 and 30, and lines 15, are used for the final reconstruction. |
| 32. |
| Remove all parts not visible within the formation itself. |
| 33. |
| Colour all areas corresponding to standing... |
| 34. |
| ...or to flattened crop, and finish the reconstruction of the 2014 Green Street formation. |
| 35. |
| The final result, matched with the aerial image. |
| Copyright © 2014, Zef Damen, The Netherlands |
