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3. 已知直角 ABC 中, ∠C = 90° , = 18 ,且過 A 點的中線為 L1 : x + y = 0 ,而過 B 點的中線為 L2 : x + 3 y = 0 ,試求此 ABC 的面積
問題詳情
3. 已知直角 ABC 中, ∠C = 90° ,
= 18 ,且過 A 點的中線為 L1 : x + y = 0 ,而過 B 點的中線為 L2 : x + 3 y = 0 ,試求此 ABC 的面積為______。
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