As follows:
圖片參考：http://i.imagehost.org/0488/ScreenHunter_05_Nov_12_17_39.gif
maths~~~~~
2009-11-13 1:41 am
回答 (1)
2009-11-13 1:47 am
✔ 最佳答案
外角和 = 63 + 72 + 2x+8 + 55 + (180 - (3x+12)) = 36063+72+8+55+180+2x-3x-12 = 360
366 - x = 360
x = 6
收錄日期: 2021-04-21 22:11:45
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091112000051KK00983