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thaivanchien4949
2 năm trước
Bài 1: Cho đoạn thẳng AB = 16 cm. Lấy M thuộc đoạn AB sao cho MA = 0,7 dm. a) Tính AM / AB b) Tính AB / MB Bài 2 : Cho tam giác ABC. Lấy M thuộc AB. Qua M kẻ MI // BC (I thuộc AC). Biết AM= 6cm; MB = 9 cm; IC = 15 cm. Tính AC.
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