中線定理【超わかる！高校数学Ⅰ・a】～授業～図形の性質＃１５
Synopsis
中線定理のポイントは！ ・中線定理 △ABC の辺 BC の中点を M とすると AB^2－AC^2=2(AM^2+BM^2) 【前の動画】 【センター ...
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