http://i7.photobucket.com/albums/y267/moneyyee/pic.jpg
圖中四邊形面積係幾多???
有冇人識??? thanks~
收錄日期: 2021-05-01 23:52:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100221000051KK00130