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(3,1) (﹣2,﹣1) (3,1)或(﹣3,﹣1) (2,1)或(﹣2,﹣1)
(-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)
(2,﹣1)或(﹣2,1) (8,﹣4)或(﹣8,4) (2,﹣1) (8,﹣4)
(﹣2,1) (2,﹣1) (2,﹣1)或(﹣2,﹣1) (﹣2,1)或(2,﹣1)
(2,﹣1)或(﹣2,1) (8,﹣4)或(﹣8,4) (2,﹣1) (8,﹣4)
)(-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)
(2,﹣1)或(﹣2,1) (8,﹣4)或(﹣8,4) (2,﹣1) (8,﹣4)
(2,﹣1)或(﹣2,1) (8,﹣4)或(﹣8,﹣4) (2,﹣1) (8,﹣4)
(1,﹣2) (﹣2,1) () (1,﹣1)
(﹣2,1) (2,﹣1) (2,﹣1)或(﹣2,1) (8,﹣4)或(﹣8,4)
(﹣2,﹣1) (2,1)或(﹣2,﹣1) (3,1)或(﹣3,﹣1) (3,1)