反転(鏡映)と極と極線の関係

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• Offline Activity (.zip)

• GeoGebra Files

  1. ピンクの線はDEFの極線 (.ggb)
     
  2. Bの反転がB'。AB'CHは内分と外分（調和点列）。この二つの間の関係を探る。 (.ggb)