2015 Fox Ground Down formation
Draw two parallel lines, tangent to circles 3 and 4 at both sides, and extend these lines downto circle 1.
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Reconstruction of the 2015 Fox Ground Down formation | ||
| 1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines. |
| 2. |
| Construct the inscribed regular 15-sided polygon of circle 1, pointing down. |
| 3. |
| Construct a circle centered at the upper intersection of circle 1 and the vertical centerline, tangent to the upper side of polygon 2. |
| 4. |
| Copy circle 3 to the center of circle 1. |
| 5. |
| Divide the part of the horizontal centerline between the righthand intersections with circles 4 and 1 into fifteen equal parts. Number the nodes from left to right 1 - 14. |
| 6. |
| Construct a circle concentric to circle 1, passing through node 5 nr. 14. |
| 7. |
| Construct a circle centered at the lefthand intersection of circle 6 and the horizontal centerline, tangent to circle 4 at the righthand side. |
| 8. |
| Construct a circle concentric to circle 7, passing through node 5 nr. 1. |
| 9. |
| Copy circles 7 and 8 three times, to the other intersections of circle 6 and the horizontal and vertical centerlines. |
| 10. |
| Construct a circle concentric to circle 1, passing through node 5 nr. 13. |
| 11. |
| Construct a circle concentric to circle 1, passing through node 5 nr. 12. |
| 12. |
| Copy circles 10 and 11 four times, to the centers of circles 7 and 9. |
| 13. |
| Construct three circles concentric to circle 1, passing through nodes 5 nrs. 9, 10 and 11. |
| 14. |
| Construct four circles concentric to circle 1, passing through nodes 5 nrs. 1, 2, 3 and 4. |
| 15. |
| For clarity reasons, some of the results of previous steps are removed temporarily. Draw two parallel lines, tangent to circles 3 and 4 at both sides, and extend these lines downto circle 1. |
| 16. |
| Draw eight lines parallel to the vertical centerline, tangent to circles 14 at both sides, and extend these lines upto and downto circle 1. |
| 17. |
| Repeat steps 15 and 16, with respect to the horizontal centerline, as shown. |
| 18. |
| Circles 1, 6, 7, 8, 9, 10, 11, 12, 13, and 14, and lines 15, 16, and 17, are used for the final reconstruction. |
| 19. |
| Remove all parts not visible within the formation itself. |
| 20. |
| Colour all areas corresponding to standing... |
| 21. |
| ...or to flattened crop, and finish the reconstruction of the 2015 Fox Ground Down formation. |
| 22. |
| The final result, matched with the aerial image. |
| Copyright © 2015, Zef Damen, The Netherlands |
