Figure: http://img831.imageshack.us/img831/1732/21857794.jpg
The figure shows a semicircle with diameter AC and centre O. The chords
AB and CD meet at P. Q is the foot of the perpendicular from P to AC.
a) show that A, Q, P, D are concyclic.
b) Let angle PQD = $. Find in terms of
i) angle BQD.
ii) angle BOD
c) Let angle BAC = @. Find angle BDQ in terms of @.
F5 Maths
2010-10-14 12:05 am
回答 (1)
2010-10-17 7:48 pm
✔ 最佳答案
========================================================圖片參考：http://img242.imageshack.us/img242/7486/79854078.png
2010-10-17 11:48:35 補充：
http://img242.imageshack.us/img242/7486/79854078.png
收錄日期: 2021-04-23 23:22:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101013000051KK00680