Reconstruction of the 2017 Little Knoll formation | ||
1. | Draw a circle. Draw and extend the horizontal and vertical centerlines. | |
2. | Construct the inscribed pentagon (regular five-sided polygon) of circle 1, pointing up. | |
3. | Draw the five diagonals of pentagon 2. | |
4. | Construct the inscribed circle of the pentagon enclosed by diagonals 3. | |
5. | Construct a circle centered at the lower intersection of circle 1 and the vertical centerline, passing through the lower righthand angular point of pentagon 2. | |
6. | Copy circle 5 to the center of circle 1. | |
7. | Construct the circumscribed pentagon of circle 6, pointing up. | |
8. | Construct the inscribed pentagon of circle 6, pointing up. | |
9. | Construct the inscribed circle of pentagon 8. | |
10. | Copy circle 9 five times, to the angular points of pentagon 2. | |
11. | Draw the connecting line between the intersections of the upper circle 10 and the upper two diagonals 3, as shown. | |
12. | Construct a circle concentric to the upper circle 10, tangent to line 11. | |
13. | Copy circle 12 four times, to the centers of the other circles 10. | |
14. | Construct a circle tangent to the lower two diagonals 3, and tangent to circle 4 at the lower side. | |
15. | Copy circle 14 to the righthand intersection of circle 1 and the horizontal centerline. | |
16. | Construct a circle concentric to circle 1, tangent to circle 15 at the righthand side. | |
17. | Construct the "two-points" circle (defined by the two end-points of a centerline) between the lower intersections of the upper circle 10 and circle 12 with the vertical centerline. | |
18. | Copy circle 17 to the center of circle 1. | |
19. | Copy circle 17 five times, to the centers of circles 10. | |
20. | Construct five pairs of parallel lines, all tangent to circle 18, and each tangent to one of the circles 19, all at both sides, as shown. See detail. | |
21. | Circles 1, 4, 10, 12, 13, and 16, pentagons 2, and 7, and lines 20, are used for the final reconstruction. | |
22. | Remove all parts not visible within the formation itself. | |
23. | Colour all areas corresponding to standing... | |
24. | ...or to flattened crop, and finish the reconstruction of the 2017 Little Knoll formation. | |
25. | The final result, matched with two aerial images. |
Copyright © 2017, Zef Damen, The Netherlands |