*Incircle, Excircles, Gergonne, and Nagel

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• Offline Activity (.zip)

• GeoGebra Files

  1. The segments drawn from the point of tangency of a side and incircle to the opposite vertex is the Gergonne point. (.ggb)
     
  2. The segments drawn from the point of tangency of a side and excircle to the opposite vertex is the Nagel point. (.ggb)