2017 Space Science Centre formation
Construct the inscribed square of circle 3, pointing up.
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Reconstruction of the 2017 Space Science Centre formation | ||
| 1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines. |
| 2. |
| Construct the inscribed square of circle 1, pointing up. |
| 3. |
| Construct the inscribed circle of square 2. |
| 4. |
| Repeat steps 2 and 3 six times: Construct the inscribed square of circle 3, pointing up. |
| 5. |
| Construct the inscribed circle of square 4. |
| 6. |
| Construct the inscribed square of circle 5, pointing up. |
| 7. |
| Construct the inscribed circle of square 6. |
| 8. |
| Construct the inscribed square of circle 7, pointing up. |
| 9. |
| Construct the inscribed circle of square 8. |
| 10. |
| Construct the inscribed square of circle 9, pointing up. |
| 11. |
| Construct the inscribed circle of square 10. |
| 12. |
| Construct the inscribed square of circle 11, pointing up. |
| 13. |
| Construct the inscribed circle of square 12. |
| 14. |
| Construct the inscribed square of circle 13, pointing up. |
| 15. |
| Construct the inscribed circle of square 14. |
| 16. |
| Construct the "two-points" circle (defined by the two end-points of a centerline) between the upper intersections of circles 13 and 15 with the vertical centerline. |
| 17. |
| Copy circle 16 to the top of square 2, and move this circle (copy and delete original) to its own lower intersection with the vertical centerline. |
| 18. |
| Construct a circle concentric to circle 1, tangent to circle 17 at the lower side. |
| 19. |
| Copy circles 13 and 15 to the center of circle 17. See detail. |
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| 20. |
| Copy circles 13 and 15 three more times, to the corresponding positions with respect to the other angular points of square 2. |
| 21. |
| Construct the "two-points" circle between the center of circle 16 and its lower intersection with the vertical centerline. |
| 22. |
| Copy circle 21 to the top of square 4. |
| 23. |
| Construct a circle concentric to circle 1, tangent to circle 22 at the lower side. See detail. |
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| 24. |
| Construct the "two-points" circle between the center of circle 22 and its lower intersection with the vertical centerline. |
| 25. |
| Copy circle 24 four times, to the angular points of square 4. See detail. |
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| 26. |
| Construct two pairs of parallel lines, parallel to the horizontal and vertical centerlines respectively, tangent to circles 25, all at both sides. See detail. |
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| 27. |
| Circles 1, 3, 5, 7, 9, 11, 13, 15, 18, 19, 20, and 23, and lines 26, are used for the final reconstruction. |
| 28. |
| Remove all parts not visible within the formation itself. |
| 29. |
| Colour all areas corresponding to standing... |
| 30. |
| ...or to flattened crop, and finish the reconstruction of the 2017 Space Science Centre formation. |
| 31. |
| The final result, matched with the aerial image. |
| Copyright © 2017, Zef Damen, The Netherlands |
