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放物線で反射

Author:: Lamuda

GeoGebra Applet

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デザルグの定理 théorème de Desargues
はさみうち法
放物線の媒介変数表示
ピックの定理
基本の絵から

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２次関数の標準形
折って外心を求める
正五角形のオリガミ
内心 ~角度に注目~
平均変化率

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