三点を通るわけ

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• Offline Activity (.zip)

• GeoGebra Files

  1. ＥとＲを通る三角形を作図すれば、Ｉが見つかる。　さらに、ＬからＱとＲへ直線を結んでみよう。その交点とＰを結ぶと・・・。 (.ggb)