99年第31題點解唔可以用...mid point th??
點解有時可以用有時唔可以用??
ce maths
2007-05-06 12:36 pm
回答 (1)
2007-05-06 7:43 pm
✔ 最佳答案
因為題目無given ACB 係一條直線由於C is on the y-axis, so we CANNOT do the following :
C = [ (-4 + 1) / 2 , (2 - 3) / 2 ]<-----------This is WRONG
如果ACB係直線就可以咁計
希望幫到你la~~
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070506000051KK00706