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Mathematics, 29.07.2021 16:40 brainfreeze911ovksah

Cho tam giác ABC. Gọi M, N lần lượt là trung điểm AB, AC, trên tia đối tia NM lấy điểm D sao cho N là trung điểm MD, cm: a, CD song song AM

b, CD = MB

c, tam giác BMC = tg DCM

d, MN ss BC

e, MN = 1/2 DC

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Cho tam giác ABC. Gọi M, N lần lượt là trung điểm AB, AC, trên tia đối tia NM lấy điểm D sao cho N l...
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