Khi A : B = C hay A = C*B với C có thể là một số, đơn thức, đa thức

1. butter and cheese are made from milk. they are milk___(produce).

2. if you put you__aside, you will be able to speak in public(sky).

3. they scientists have been carrying out some__plans thes year(agri culture).

4. the boy tried to repair the clock , but he was__(success).

cho tam giac ABC can tai A. Tren tia doi cua tia AC lay diem k, tren tia doi AB lay diem m sao cho AI=AK

a, tu giac DKIB la hinh gi?.

b, cho goc A=40 do. tinh cac goc cua hinh thang