問題詳情
21. 座標平面上有一個線對稱圖形， 
兩點在此圖形上且互為對稱點。若此圖形上有一點C(-2,-9 )，則C的對稱點座標為何？
(A) (-2 , 1 )
(B)( 
)
(C) ( 
)
(D) ( 8 ,-9)
參考答案
無參考答案
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