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福島県の高校入試を
解いてみました パート3
数学の大問7
図形の問題
(1)(2)は当てたい問題!
(3)は、同じような問題をやったことがあれば、チャンスでした。初見で解くのは難しいかも。。
三角形ACPを底面、求める距離が高さとなる三角錐=三角形ABCを底面、高さBPの三角錐
(どちらも三角錐ABC-P)
例年よりは易しい問題でした。