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(5,-3) (9,0) (-3,5) (-5,3)
(2,1)向左平移2个单位长度得到点A.′,则点A.′的坐标是( ). A.(0,1) (2,-1) (4,1) (2,3)
(2,1)向左平移2个单位长度得到点A.′,则点A.′的坐标是( ) A.(2,3) (2,-1) (4,1) (0,1)
在z轴上,它到点(3,2,1)的距离是,则点A.的坐标是( ) A.(0,0,-1) (0,1,1) (0,0,1) (0,0,13)
(2,1)向左平移2个单位得到点 ,则点B.的坐标是( ) A.(2,3) B.(2,-1) (4,1) (0,1)
(2,1)向左平移2个单位长度得到点A.′,则点A.′的坐标是( ) A.(2,3) (2,-1) (4,1) (0,1)
(1,0,2), (1,-3,1),点M.在z轴上,且到A.B.两点间的距离相等,则M.的坐标为( ) A.(-3,0,0)B.(0,-3,0) (0,0,-3) (0,0,3)
(2,1)向左平移2个单位长度得到点A.′,则点A.′的坐标是( ) A.(0,1) (2,-1) (4,1) (2,3)
(1,0,2)与点 (1,-3,1)的距离相等,则点M.的坐标是( ) A.(-3,-3,0)B.(0,0,-3) (0,-3,-3) (0,0,3)
(-2,1)向左平移2个单位到点Q.,则点Q.的坐标为( ) A.(-2,3) (0,1) (-4,1) (-4,-1)