difficult maths question!!!

[匿名]

2009-01-27 9:45 pm

http://farm4.static.flickr.com/3124/3230072913_7917eaec0b.jpg?v=0

help!! I don't know how to prove

更新1:

tonyleung052... 答咁少....有a b 2題...

更新2:

tonyleung052 你有沒睇清楚個題目係express

更新3:

可唔可以用英文reason 答

回答 (1)

用戶2053

2009-01-27 11:08 pm

✔ 最佳答案

In the figure,ABCD are concyclic,
so p = q,
ㄥBHk = q (the same chord BE)
So ㄥBHK = q = p = ㄥDAE
So ABHG are concyclic.

2009-01-28 00:04:28 補充：
重答:
a) In the figure,ABCD are concyclic,
so p = q,(圓內接四邊形的內角=其對角補角)

ㄥBHE = q (the same chord BE)
So ㄥBHE = q = p = ㄥDAE
b) By part a) ,In ABHG,ㄥBHE=ㄥDAE,so ABHG are concyclic.(內角=其對角補角)

2009-01-28 16:55:57 補充：
Sorry,part a)最後加多句:ㄥBHE = p

2009-01-28 19:58:21 補充：
英文唔記得,呢DTextbook實有啦,自己揾啦~

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