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 |