2012 Yarnbury Castle formation
|
Reconstruction of the 2012 Yarnbury Castle formation | ||
| 1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines. |
| 2. |
| Construct the circumscribed dodecagon (regular 12-sided polygon) of circle 1, with the midpoint of one side on the horizontal centerline. |
| 3. |
| Draw the diagonal of dodecagon 2 between the two angular points just above the horizontal centerline. |
| 4. |
| Construct the inscribed dodecagon of circle 1, pointing to the right. |
| 5. |
| Construct a circle, centered at the righthand intersection of circle 1 and the horizontal centerline, passing through the intersection of line 3 and the righthand side of dodecagon 4 just above the horizontal centerline. |
| 6. |
| Construct the circumscribed circle of dodecagon 2. |
| 7. |
| Construct a circle concentric to circle 5, tangent to circle 6 at the righthand side. |
| 8. |
| Copy circle 7 to the righthand intersection of circle 5 and the horizontal centerline. |
| 9. |
| Construct a circle concentric to circle 1, tangent to circle 8 at the lefthand side. |
| 10. |
| Copy circle 7 to the lefthand intersection of circle 8 and the horizontal centerline. |
| 11. |
| Construct a circle concentric to circle 5, tangent to circle 10 at the lefthand side. |
| 12. |
| Copy circle 11 five times, the first to its lefthand intersection with the horizontal centerline, the others to their successive corresponding intersections, as shown. |
| 13. |
| Construct five circles concentric to circle 5, tangent to circles 12 at the lefthand sides. |
| 14. |
| Copy circle 5 five times, to the centers of circles 12. |
| 15. |
| Construct five circles concentric to circle 5, tangent to circles 14 at the lefthand sides. |
| 16. |
| Copy circle 9 to the lower intersection of circle 1 and the largest circle 13. |
| 17. |
| Construct a circle concentric to circle 16, tangent to circle 7 at the upper righthand side. |
| 18. |
| Circles 1, 5, 9, 11, 13, 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 2012 Yarnbury Castle formation. |
| 22. |
| The final result, matched with the aerial image. |
| Copyright © 2012, Zef Damen, The Netherlands |
