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✨ Best Answer ✨

(1)Cevaの定理より
AR/RB・BP/PC・CQ/QA=1
6/2・BP/PC・2/5=1
∴BP:PC=5:6
(2)Menelausの定理より
AR/RB・BP/PC・CQ/QA=1
AR/RB・8/4・8/2=1
∴AR:RB=1:8

miya

ありがとうございます!

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