Reconstruction of the
2009 East Kennett Longbarrow formation |
|
| 1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines.
|
|
| 2. |
| Construct the circumscribed octagon(regular 8-sided polygon) of circle 1, with two sides horizontal and two vertical.
|
|
| 3. |
| Construct the circumscribed circle of octagon 2.
|
|
| 4. |
| Construct the inscribed octagon of circle 1, pointing to the right.
|
|
| 5. |
| Construct a circle centered at the upper righthand angular point of octagon 4, passing through the righthand intersection of circle 3 and the horizontal centerline.
|
|
| 6. |
| Copy circle 5 seven times, to the other angular points of octagon 4.
|
|
| 7. |
| Construct the inscribed square of circle 1, with sides horizontal and vertical.
|
|
| 8. |
| Construct a circle centered at the intersection of the righthand side of square 7 and the horizontal centerline, tangent to the righthand sides of octagon 4.
|
|
| 9. |
| Copy circle 8 four times, to the angular points of square 7.
|
|
| 10. |
| Construct a circle centered at the righthand intersection of circle 3 and the horizontal centerline, tangent to circle 1 at the righthand side.
|
|
| 11. |
| Construct a circle concentric to circle 5, tangent to circle 10 at the lower righthand side.
|
|
| 12. |
| Copy circle 11 three times, to the other angular points of square 7.
|
|
| 13. |
| Circles 1, 3, 5, 6, 9, 11 and 12 are used for the final reconstruction.
|
|
| 14. |
| Remove all redundant parts not visible in the formation itself.
|
|
| 15. |
| Colour all areas corresponding to standing...
|
|
| 16. |
| ...or to flattened plants, and finish the reconstruction of the 2009 East Kennett Longbarrow formation.
|
|
| 17. |

| The final result, matched with two aerial images.
|