On strict strong constructibility with a compass alone

@article{Avron1990OnSS,
  title={On strict strong constructibility with a compass alone},
  author={Arnon Avron},
  journal={Journal of Geometry},
  year={1990},
  volume={38},
  pages={12-15}
}
  • A. Avron
  • Published 1 July 1990
  • Mathematics
  • Journal of Geometry
We show that every point in the plane which can be constructed by a compass and a ruler, given a setS of points, can be constructed using a compass alone so that the following restriction is met. LetO andK be two arbitrarily chosen distinct points ofS. Then every point is obtained as a proper intersection of two circles that are either completely symmetrical with respect to the lineOK or have both their centers on this line. 

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References

Theorems on strong constructibility with a compass alone

We show that every point in the plane which can be constructed by a compass and a ruler, given a set S of points, can be constructed using a compass alone, in such a way that the centres of all the