 |
| ||||
Home Page
F.A.Qs
Statistical Charts
Past Contests
Scheduled Contests
Award Contest
| ||||||||||
| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest | |||||||||
Re:证明，可能不是很简明In Reply To:证明，可能不是很简明 Posted by:huicpc0860 at 2010-04-13 17:22:35 再提供一种证明方法 延长CN至Q，使CN=NQ，则ABC≌CQF 得∠FCQ=∠CAB 因为∠FCQ+∠ACO=90º 所以∠ACO+∠CAB=90º,即CO⊥AB Followed by: Post your reply here: |
All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator
