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nguyenhoangduyen1385
2 năm trước
Cho tam giác DEF vuông ở D. Kẻ đường cao DH. Trên DH lấy I. Gọi M là hình chiếu của F trên EI. Chứng minh: a, Tam giác EDI đồng dạng tam giác EMD. b, Giả sử DE = 6cm; DF = 8cm. Tính các cạnh, góc còn lại của tam giác DEF GIẢI NHANH GIÚP MK VS Ạ. MK ĐANG CẦN GẤP
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