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2.平面上兩點 ,已知 的中點坐標為 ,試求P2到點 的距離(A) x=7,y=14 (B) x=8,y=15 (C) x=9,y=18 (D) x=-1,y=15 。
問題詳情
2.平面上兩點
,已知
的中點坐標為
,試求P2到點
的距離
(A) x=7,y=14
(B) x=8,y=15
(C) x=9,y=18
(D) x=-1,y=15 。
參考答案
答案:C
難度:
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