問題詳情
18.△ABC為直角三角形，∠BAC＝90°， 
，D為 
中點，若G1為△ABD的重心，若G2為△ACD的重心，則 
長為何？
(A) 
(B) 5
(C) 
(D) 
。
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增
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