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Mathematics, 22.07.2021 07:50 shekinahdavis8760

Cho đường tròn tâm O bán kính R đường kính BC . điểm A di động trên O gọi P, Q theo thứ tự là trung điểm của AB và AC a) chứng minh PQ có độ dài không đổi khi A di động trên O
b) tìm quỹ tích trung điểm M của PQ

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Cho đường tròn tâm O bán kính R đường kính BC . điểm A di động trên O gọi P, Q theo thứ tự là trung...
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