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Ban tu ve hinh,mk ko biet cach ve
a/Diem B la diem nam giua A va C vi AB<AC(2cm<8cm)
Ta co:AB+BC=AC
2 +BC= 8
BC=8-2=6 cm
b/Vi M la trung diem cua doan thang BC nen BM=CM=BC:2=6:2=3 cm
c/Diem A la diem nam giua B va D vi B va D la hai tia doi nhau chung goc A
Diem A la trung diem cua doan thang BD vi:
+A nam giua D va B
+AD=AB=2 cm
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