1)
http://img97.imageshack.us/img97/8150/dsc00564jv.jpg
AC,AD and BE are tangents to the circle.
If AC=12cm,find the perimeter of triangle ABE.
ans: 24cm
2)
AB,AC and BC are three tangents to the circle at D,E and F respectively.If
AB=8cm ,BC=6cm and angle ABC=90,the area of the shaded region.
ans: 24-4 pie
pls show steps.thz!
F.4 circle
2010-05-30 6:42 am
回答 (2)
2010-05-30 7:19 am
✔ 最佳答案
Please see the following:圖片參考：http://img684.imageshack.us/img684/5522/99976890.png
2010-05-29 23:19:54 補充：
http://img684.imageshack.us/img684/5522/99976890.png
2010-05-30 7:22 am
The proof of similar triangle is simply the property of tangent...
收錄日期: 2021-04-22 00:48:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100529000051KK01723