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tieuthu_bongbong
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
Cho diem A(3;2)
a) Viet toa do diem A1 . Sao cho truc hoanh la trung truc cua duong thang A;A1
b) Viet toa do diem A2 . Sao cho truc tung la trung truc cua duong thang A;A2
a) Viet toa do diem A1 . Sao cho truc hoanh la trung truc cua duong thang A;A1
b) Viet toa do diem A2 . Sao cho truc tung la trung truc cua duong thang A;A2