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(2003•福州)如图,⊙O的直径AB垂直于弦CD,垂足为H,点P是上一点(点P...
(2003•福州)如图,⊙O的直径AB垂直于弦CD,垂足为H,点P是
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232416290285382/SYS201310212324162902853008_ST/0.png)
上一点(点P不与A、C两点重合),连接PC、PD、PA、AD,点E在AP的延长线上,PD与AB交于点F,给出下列四个结论:
(1)CH
2=AH•BH;
(2)
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232416290285382/SYS201310212324162902853008_ST/1.png)
=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232416290285382/SYS201310212324162902853008_ST/2.png)
;
(3)AD
2=DF•DP;
(4)∠EPC=∠APD,其中正确的个数是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232416290285382/SYS201310212324162902853008_ST/images3.png)
A.1
B.2
C.3
D.4
考点分析:
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