Cho \( \Delta ABC \) có \(A \left( {1; - 1;2} \right), \, \,B \left( {4;0;3} \right), \, \,C \left( {2;2;5} \right) \). Phương trình trung tuyến \(AM \) là:
A.\(\dfrac{{x - 1}}{4} = \dfrac{{y + 1}}{{ - 1}} = \dfrac{{z - 2}}{3}\)
B.\(\dfrac{{x - 1}}{1} = \dfrac{{y + 1}}{3} = \dfrac{{z - 2}}{4}\)
C.\(\dfrac{{x - 1}}{1} = \dfrac{{y + 1}}{1} = \dfrac{{z - 2}}{1}\)
D.\(\dfrac{{x - 1}}{2} = \dfrac{{y + 1}}{{ - 1}} = \dfrac{{z - 2}}{3}\)
A.\(\dfrac{{x - 1}}{4} = \dfrac{{y + 1}}{{ - 1}} = \dfrac{{z - 2}}{3}\)
B.\(\dfrac{{x - 1}}{1} = \dfrac{{y + 1}}{3} = \dfrac{{z - 2}}{4}\)
C.\(\dfrac{{x - 1}}{1} = \dfrac{{y + 1}}{1} = \dfrac{{z - 2}}{1}\)
D.\(\dfrac{{x - 1}}{2} = \dfrac{{y + 1}}{{ - 1}} = \dfrac{{z - 2}}{3}\)
Loga
Hóa Học lớp 12
