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ThuytienNEU
2 năm trước
cho tam giác ABC có A=90 độ kẻ AH vuông góc BC tại H kẻ HE vuông góc AC tại điểm E a vì sao AB song song HE b cho B=60 độ tính EHC AHE BAH giúp mình với xong mình vote 5 sao cảm ơn nhiều ạ giúp mình với
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