由 enim » 2005-12-20 16:22
這題目給了兩個頂點座標(0,0)(6,0)中心座標(3,2)
題目告訴你說中心的座標是三角形三頂點坐標的平均數
現在要求另一個頂點座標(x,y)
(0+6+x)/3=3
x=3
(0+0+y)/3=2
y=6
則(3,6)

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