2016 Cley Hill formation
|
Reconstruction of the 2016 Cley Hill formation | ||
| 1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines. |
| 2. |
| Construct four inscribed pentagons (regular 5-sided polygons) of circle 1, one pointing up, one pointing down, one pointing to the left, and one pointing to the right. |
| 3. |
| Construct the inscribed regular 20-sided polygon of circle 1, by connecting all adjacent angular points of pentagons 2. |
| 4. |
| Draw the twenty rays of polygon 3, from the center to the angular points. Number these rays as well as the angular points 1 - 20 clockwise, starting at the top. |
| 5. |
| Construct a "two-points" circle (defined by the two end-points of a centerline) between angular points 3 nrs. 1 and 2. |
| 6. |
| Copy circle 5 to its lefthand intersection with circle 1. |
| 7. |
| Construct a circle concentric to circle 1, tangent to circle 6 at the upper side. |
| 8. |
| Draw the connecting line between angular points 3 nrs. 1 and 14. |
| 9. |
| Construct a circle concentric to circle 1, passing through the intersection of line 8 and ray 4 nr. 20. |
| 10. |
| Construct the circumscribed decagon (regular 10-sided polygon) of circle 9, pointing to the right. |
| 11. |
| Construct the circumscribed circle of decagon 10. |
| 12. |
| Construct the circumscribed regular 20-sided polygon of circle 11, with the mid-point of the upper side on the vertical centerline. |
| 13. |
| Construct a circle passing through angular points 3 nrs. 3 and 9, and passing through the angular point of polygon 12 in between rays 4 nrs. 2 and 3. |
| 14. |
| Copy circle 13 nineteen times, by repeating step 13 for the corresponding angular points with respect to the other rays 4, as shown. |
| 15. |
| Construct a "two-points" circle between the mid-point of the upper side of polygon 12 and its adjacent angular point to the right. |
| 16. |
| Copy circle 15 to the upper intersection of circle 7 and the vertical centerline. |
| 17. |
| Construct a circle concentric to circle 1, tangent to circle 16 at the lower side. |
| 18. |
| Circles 7, 9, 13, 14, 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 2016 Cley Hill formation. |
| 22. |
| The final result, matched with the aerial image. |
| Copyright © 2016, Zef Damen, The Netherlands |
