YLL討論網

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阿....是我誤解題意了...==
晚點再po更鄭正的解答...(或是有高手可以先解答)

#ed_op#DIV#ed_cl#想問問宇智波鼬，為什麼P,O,O1三點共線???#ed_op#/DIV#ed_cl#

(剛不知為什麼突然連不上來...)

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