如图,⊙O的直径AB的长为10,弦AC长为6,∠ACB的平分线交⊙O于D,则AD长为( )
![](https://img.xkw.com/dksih/QBM/2018/1/10/1857261077725184/1862853102526464/STEM/dad18f6d68b845f09c7eb0136473ee68.png?resizew=141)
![](https://img.xkw.com/dksih/QBM/2018/1/10/1857261077725184/1862853102526464/STEM/dad18f6d68b845f09c7eb0136473ee68.png?resizew=141)
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2012·江苏盐城·一模 查看更多[2]
更新时间:2012-06-17 10:28:29
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【推荐1】如图,在菱形ABCD中,∠DAB=45°,DE⊥BC于点E,交对角线AC于点P,过点P作PF⊥CD于点F.若△PDF的周长为8.则菱形ABCD的面积为( )
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【推荐2】如图,在
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【推荐1】在Rt△ ABC中,∠ C=90°,BC=6,AC=8,D、E分别是AC、BC上的一点,且DE=6, 若以DE为直径的圆与斜边AB相交于M、N,则MN的最大值为( )
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【推荐2】如图,点A的正方体左侧面的中心,点B是正方体的一个顶点,正方体的棱长为2,一蚂蚁从点A沿其表面爬到点B的最短路程是( )
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