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Mathematics, 22.07.2021 08:10 neharikakalasapkkam

Cho tam giác ABC vuông tại C, đường trung tuyến CO. Chứng minh rằng CO=1/2 AB

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Cho tam giác ABC vuông tại C, đường trung tuyến CO. Chứng minh rằng CO=1/2 AB...

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