Danay6290 Danay6290

20-06-2021
Mathematics

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Cho ∆ABC;phân giác AD,BE,CF cắt nhau tại I . a, Góc IAC+góc IBC+ góc ICA=? b, Kẻ IH vuông góc với BC . C/m Góc BIH=góc CID

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taygabrielle421 taygabrielle421

20-06-2021

can you post a pic???

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