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quach tue minh
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apple_buz
27 tháng 12 2018 lúc 16:59

Câu hỏi đâu bạn?

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Bùi Hải Anh
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Hoàng Diệu Anh
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Trần Minh Châu
19 tháng 11 2017 lúc 15:59

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nguyen minh thu
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Dang Thi Lien
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do pham minh linh
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bui tien dung
19 tháng 11 2017 lúc 15:13

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Lê Quỳnh Thanh Ngân
2 tháng 1 2018 lúc 7:39

bui tien dung bấm tào  lao

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❤️ buồn ❤️
25 tháng 11 2018 lúc 14:26

còn đâu tự làm nốt vì nó qúa dễ vs cả bạn lười suy nghĩ và ko nghe cô giáo giảng nen bạn ko làm đk

Ta có :
AB = AM + BM 
=> MN = 3cm
Mà AM = 3cm (gt)
=> M là trung điểm của AB (đcpcm)

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daohuyentrang
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Truong Anh Vu
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Truong Anh Vu
28 tháng 12 2017 lúc 20:50

Giup minh nha 

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Võ Kim Tuấn Anh
28 tháng 12 2017 lúc 20:50

a. AB= OA + OB = 2 + 5 = 7 cm

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hoang anh
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