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５章④対称移動「対称の軸を動かしてみよう」
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５章③回転移動「点Pを動かして回転させてみよう」
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６章⑥三角柱の展開図
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円周角定理の逆
kageyama
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１次関数の利用（ダイヤグラム） のコピー
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中２ 平行四辺形(特別な平行四辺形)
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面を動かしてできる立体は？教材
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正四面体の展開図
okyota
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発展問題(三平方の定理の利用)
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中２ 等積変形
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三平方の定理の導入
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座標の練習
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