Reconstruction of the 2017 Highworth formation | ||
1. | Draw a circle. Draw and extend the horizontal and vertical centerlines. | |
2. | Copy circle 1 two times, to its righthand intersection with the horizontal, and its upper intersection with the vertical centerline. | |
3. | Draw the connecting line between the intersections of circles 2. | |
4. | Construct the inscribed dodecagon (regular 12-sided polygon) of circle 1, with one angular point on line 3. | |
5. | Construct the inscribed dodecagon of circle 1, pointing up. Number the angular points of both dodecagons 4 and 5 consectutively 1 - 24 clockwise, starting at the top. | |
6. | Construct a circle centered at the lower intersection of circle 1 and the vertical centerline, passing through angular point nr. 8. | |
7. | Copy circle 6 to angular point nr. 1. | |
8. | Copy circle 6 to angular point nr. 23. | |
9. | Copy circle 6 to angular point nr. 21. | |
10. | Copy circle 6 eight more times, to the other angular points of dodecagon 5. | |
11. | Construct a circle concentric to circle 1, passing through the righthand intersection of circles 6 and 7. | |
12. | Construct a circle concentric to circle 1, passing through the righthand intersection of circles 6 and 8. | |
13. | Construct a circle concentric to circle 1, passing through the upper righthand intersection of circles 6 and 9. | |
14. | Construct the circumscribed dodecagon of circle 1, pointing up. | |
15. | Construct the circumscribed circle of dodecagon 14. | |
16. | Construct the circumscribed dodecagon of circle 15, with the mid-point of one side at the top of dodecagon 14. | |
17. | Construct the circumscribed circle of dodecagon 16. | |
18. | Construct a circle centered at the lower intersection of circle 7 and the vertical centerline, tangent to circle 9 at the near side. | |
19. | Copy circle 18 four times, to the intersections of circle 15 with the horizontal and vertical centerlines. | |
20. | Construct a circle centered at the righthand intersection of circle 8 and the horizontal centerline, tangent to circle 6 at the near side. | |
21. | Copy circle 20 to the center of the upper circle 19. | |
22. | Construct a circle concentric to circle 1, tangent to circle 21 at the upper side. | |
23. | Construct a circle centered at the upper intersection of circle 12 and the vertical centerline, tangent to circle 11 at the upper side. | |
24. | Copy circle 23 to the center of circle 21. | |
25. | Construct a circle concentric to circle 1, tangent to circle 24 at the upper side. | |
26. | Circles 6, 7, 8, 9, 10, 11, 12, 13, 15, 17, 19, 22, and 25, are used for the final reconstruction. | |
27. | Remove all parts not visible within the formation itself. | |
28. | Colour all areas corresponding to standing... | |
29. | ...or to flattened crop, and finish the reconstruction of the 2017 Highworth formation. | |
30. | The final result, matched with the aerial image. |
Copyright © 2017, Zef Damen, The Netherlands |