三角形の外心，外接円［数a 図形の性質］【一夜漬け高校数学574】三角形の３辺の垂直二等分線は１点で交わる。
Synopsis
3:30~ 外接円を描く。 4:59~［練習問題］ 6:27~ 証明。 【一夜漬け高校数学】 ～一夜漬けでの小さな努力で大きな成果を出すため ...
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