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Captchalogue Card
Captchalouge Card
The finished product
Vital statistics
Steps required 27 main steps + 7 primer
Tool set Compasses and straightedge
Meta Information
Index number No. 6.12.01$006
Date created 04.02.2011
Date digitized 04.02.2011
View Template Page

InstructionsEdit

  1. Create points A and B. You know the drill.
  2. Create circle AB.
  3. Create line AB.
  4. Create perpendicular of AB passing through A.
  5. The antipode of B is C.
  6. Halve AC, midpoint D.
  7. Where the perpendicular crosses circle AB mark F. F is above A.
  8. Create circle, center F, radius AD.
  9. Where this new circle crosses AF, mark G. F is in segment AG.
  10. Create line parallel to AB passing through G.
  11. Create line parallel to AG passing through B.
  12. Where circle AB and FG cross mark H, where ABHF is a convex quadrilateral.
  13. Create line parallel to AG passing through H.
  14. Where the line from step 10 and 11 cross mark I.
  15. Where GI and the line two steps ago cross mark J.
  16. Create circle IJ.
  17. Where this circle crosses segment IB mark K.
  18. Trisect* IJ, making two new points. Order: J V W I.
    1. Create circles IJ and JI.
    2. Where these circles cross mark L and O. L is above IJ; O is below IJ.
    3. Create circle LJ.
    4. Create rays JL and IL.
    5. Where these rays cross circle LJ mark M and N, respectively.
    6. Create segments MO and NO.
    7. Where these new segments cross IJ mark V and W. JV = VW = WI.
  19. Trisect* IK, making two new points. Order: I T U K.
    1. Create circle KI.
    2. Where circle IK and KI cross mark P and S. P is to the right of IK; S is to the left of IK.
    3. Create circle PI.
    4. Create rays IP and KP.
    5. Where these rays cross circle PI mark Q and R, respectively.
    6. Create segments QS and RS.
    7. Where these new segments cross IK mark U and T. IT = TU = UK.
  20. Create line parallel to IJ passing through T.
  21. Create line parallel to IB crossing through V.
  22. Where these lines cross mark Z.
  23. Create line parallel to IJ passing through U.
  24. Create line parallel to IB passing through W.
  25. Where this new line crosses ZT mark X.
  26. Where WX crosses the line in step 23 mark Y.
  27. GVZXYUBA is a capchalogue card!

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