1 . 已知
是圆
上的两点,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a1467ecf286e3cadaf5aa006606f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
A.若点![]() ![]() ![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.![]() ![]() |
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2 . 已知
,
,点P满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5a6145990adf5574f0e0f2fc828ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3326927e4b01e981a19109633141e06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed40bce11976e6d1a7274116c69c379.png)
A.点P在以AB为直径的圆上 | B.![]() ![]() |
C.存在点P使得![]() | D.![]() ![]() |
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