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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: Cho tam giac ABC,tren tia doi cua tia AB lay diem Isao cho AI=AB,tren tia doi cua tia AC lay diem E sao cho A la trung diem cua EC a) C

Toán Lớp 7: Cho tam giac ABC,tren tia doi cua tia AB lay diem Isao cho AI=AB,tren tia doi cua tia AC lay diem E sao cho A la trung diem cua EC
a) Chung minh EI=BC,EI//BC
b)Tia phan giac cua tam giac EIA cat AE tai M,tia phan giac cua goc ABC cat AC tai N.Chung minh tam giac EMI=tam giac CNB
c)Tren tia IM lay diem K,tren tia BN lay diem H sao cho IK=BH.
Chung minh:K,A,H thang hang
AI GIUP MINH DI MA PLSSSSSSSSSSSSSSSSSSSS!!!!!!!!!!!!!!!!!!!

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222-9+11+12:2*14+14 = ? ( )

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