Reconstruction of the
2020 Etchilhampton Hill formation |
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1. |
| Draw a circle. Draw and extend the horizontal and vertical centerlines.
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2. |
| Construct the inscribed nonagon (regular 9-sided polygon) of circle 1, pointing up. Number the angular points clockwise 1 - 9, starting at the top.
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3. |
| Draw the diagonal of nonagon 2 between angular points nrs. 1 and 5. Repeat this eight times, for the other corresponding angular points.
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4. |
| Construct a circle (concentric to circle 1) passing through the innermost intersections of diagonals 3.
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5. |
| Construct a circle (concentric to circle 1) passing through the outermost inner intersections of diagonals 3.
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6. |
| Construct a circle centered at angular point nr. 1, passing through angular point nr. 2.
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7. |
| Construct a circle concentric to circle 1, tangent to circle 6 at the lower side.
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8. |
| Construct a circle centered at the upper intersection of circle 5 and the vertical centerline, tangent to circle 7 at the upper side.
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9. |
| Construct a circle concentric to circle 1, tangent to circle 8 at the upper side.
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10. |
| Construct the circumscribed nonagon of circle 1, pointing down.
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11. |
| Construct the circumscribed circle of nonagon 10.
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12. |
| Construct a circle centered at the intersection of the lower side of nonagon 2 and the vertical centerline, tangent to circle 1 at the lower side.
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13. |
| Copy circle 12 to the upper intersection of circle 11 and the vertical centerline, and move this circle (copy and delete original) to its own corresponding intersection.
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14. |
| Construct a circle concentric to circle 1, tangent to circle 13 at the upper side.
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15. |
| Copy circle 8 to the righthand intersection of circle 14 and the horizontal centerline.
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16. |
| Construct a circle concentric to circle 1, tangent to circle 15 at the lefthand side.
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17. |
| Copy circle 6 to angular point nr. 8.
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18. |
| Construct a circle concentric to circle 1, passing through the lower righthand intersection of circles 6 and 17.
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19. |
| Construct the inscribed equilateral triangle of circle 18, pointing up.
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20. |
| Construct the inscribed circle of triangle 19.
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21. |
| Construct a circle centered at angular point nr. 1, passing through angular point nr. 3.
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22. |
| Copy circle 6 seven times, to angular points nrs. 2, 3, 4, 5, 6, 7, and 9.
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23. |
| Copy circle 21 eight times, to all other angular points of nonagon 2.
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24. |
| Copy circle 12 to the lower righthand intersection of circles 17 and 21.
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25. |
| Repeat step 24 eight times, to all other corresponding intersections of circles 6, 22, and 23.
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26. |
| Construct a circle centered at the lower intersection of circle 21 and the vertical centerline, tangent to circle 20 at the lower side.
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27. |
| Construct a circle concentric to circle 21, tangent to circle 26 at the lower side.
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28. |
| Copy circle 27 eight times, to the centers of circles 23.
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29. |
| Circles 4, 5, 6, 7, 9, 11, 14, 16, 17, 20, 21, 22, 23, 24, 25, 27, and 28, are used for the final reconstruction.
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30. |
| Remove all parts not visible within the formation itself.
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31. |
| Colour all areas corresponding to standing...
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32. |
| ...or to flattened crop, and finish the reconstruction of the 2020 Etchilhampton Hill formation.
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31. |
| The final result, matched with the aerial image.
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