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21 votes
21 votes
Cho tam giác abc có trọng tâm g. Gọi h là điểm đối xứng của g qua b. Cm: vtHA -5vt HB +vt HC=vt 0

User Debaghtk
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1 Answer

11 votes
11 votes

PAKYOU KAHAHAHAHAHAHAHAGAGAAHAHA

User Ali Mokrani
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