呢個網址..既proof #3
http://www.cut-the-knot.org/pythagoras/index.shtml
可唔可以解釋下果幅圖..點解計出黎會係..c2 = (a - b)2 + 2ab
= a2 - 2ab + b2 + 2ab
= a2 + b2
收錄日期: 2021-04-12 23:01:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061202000051KK02544