Danay6290 Danay6290
  • 20-06-2021
  • Mathematics
contestada

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 taygabrielle421
  • 20-06-2021
can you post a pic???
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