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(1,2) (2,2) (3,2) (4,2)
(﹣4,2), (﹣6,﹣4),以原点O.为位似中心,相似比为,把△ABO缩小,则点A.的对应点A.′的坐标是( ) A.(﹣2,1)B.(﹣8,4) (﹣2,1)或(2,﹣1) (﹣8,4)或(8,﹣4)
(-4,2), (-6,-4 ),以原点O.为位似中心,相似比为,把△ABO缩小,则点A.的对应点A.'的坐标是 ( ) A.(-2,1) B.(-8,4) (-8,4)或(8,-4) (-2,1)或(2,-1)
(4,2) (-4,2) (-4,-2) (4,-2)
(﹣2,1) (﹣8,4) (﹣8,4)或(8,﹣4) (﹣2,1)或(2,﹣1)
(1,2) (2,2) (3,2) (4,2)
(﹣2,1) (﹣8,4) (﹣8,4)或(8,﹣4) (﹣2,1)或(2,﹣1)
(-2,1) (-8,4) (-8,4)或(8,-4) (-2,1)或(2,-1)
'B'C' 与△ABC 关于y轴对称,那么点A.的对应点A.'的坐标为( ).A.(-4,2) (-4,-2) (4,-2) (4,2)
(-2,1) (-8,4) (-8,4)或(8,-4) (-2,1)或(2,-1)
'B'C' 与△ABC 关于y轴对称,那么点A.的对应点A.'的坐标为( ). A.(-4,2) (-4,-2) (4,-2) (4,2)