Reconstruction of the
2015 Etchilhampton (2) formation |
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1. |
| Draw a circle. Draw the horizontal and vertical centerlines.
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2. |
| Construct the inscribed regular 18-sided polygon of circle 1, pointing to the right.
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3. |
| Draw the connecting line between the righthand angular points of polygon 2 just above and below the horizontal centerline.
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4. |
| Draw the connecting line between the center of circle 1 and the intersection of line 3 and the horizontal centerline. Divide this line into seven equal parts, and number the nodes from left to right 1 - 6.
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5. |
| Construct a circle concentric to circle 1, passing through node 4 nr. 1.
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6. |
| Construct a circle concentric to circle 1, passing through node 4 nr. 2.
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7. |
| Construct a circle concentric to circle 1, passing through node 4 nr. 3.
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8. |
| Construct a circle concentric to circle 1, passing through node 4 nr. 4.
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9. |
| Construct a circle concentric to circle 1, passing through node 4 nr. 5.
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10. |
| Construct a circle concentric to circle 1, passing through node 4 nr. 6.
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11. |
| Construct a circle concentric to circle 1, passing through the intersection of line 3 and the horizontal centerline.
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12. |
| Draw the eighteen rays of polygon 2, from the center of circle 1 to the angular points. Number the rays clockwise 1 - 18, starting at the uppermost righthand angular point.
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13. |
| Draw two connecting lines, one between the intersection of ray 12 nr. 1 and circle 11 and the intersection of ray 12 nr. 2 and circle 10, the other between the intersection of ray 12 nr. 1 and circle 10 and the intersection of ray 12 nr. 2 and circle 11.
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14. |
| Repeat step 13 eight times, with respect to pairs of rays 12 nrs. 3 and 4, 5 and 6, 7 and 8, 9 and 10, 11 and 12, 13 and 14, 15 and 16, and 17 and 18.
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15. |
| Draw two connecting lines, one between the intersection of ray 12 nr. 2 and circle 10 and the intersection of ray 12 nr. 3 and circle 9, the other between the intersection of ray 12 nr. 2 and circle 9 and the intersection of ray 12 nr. 3 and circle 10.
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16. |
| Repeat step 15 seven times, with respect to pairs of rays 12 nrs. 4 and 5, 6 and 7, 8 and 9, 10 and 11, 12 and 13, 14 and 15, and 16 and 17.
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17. |
| Draw two connecting lines, one between the intersection of ray 12 nr. 1 and circle 9 and the intersection of ray 12 nr. 2 and circle 8, the other between the intersection of ray 12 nr. 1 and circle 8 and the intersection of ray 12 nr. 2 and circle 9.
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18. |
| Repeat step 17 seven times, with respect to pairs of rays 12 nrs. 5 and 6, 7 and 8, 9 and 10, 11 and 12, 13 and 14, 15 and 16, and 17 and 18.
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19. |
| Circles 1, 5, 6, 7, 8, 9, and 10, and lines 12, 13, 14, 15, 16, 17, and 18, are used for the final reconstruction.
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20. |
| Remove all parts not visible within the formation itself.
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21. |
| Colour all areas corresponding to standing...
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22. |
| ...or to flattened crop, and finish the reconstruction of the 2015 Etchilhampton (2) formation.
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23. |
| The final result, matched with the aerial image.
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