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Mathematics, 16.08.2021 06:10, MayFlowers
Cho hai đường tròn (O;R) và (O';r) cố định, tiếp xúc ngoài với nhau tại A (R>r). M là điểm thuộc đường tròn (O;R), N là điểm thuộc đường tròn (O';r) sao cho góc MAN= 90 độ
a) Chứng minh OM // O'N
b) Chứng minh đường thẳng MN luôn đi qua một điểm cố định
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Answers: 2
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Cho hai đường tròn (O;R) và (O';r) cố định, tiếp xúc ngoài với nhau tại A (R>r). M là điểm thuộc...
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