如图:矩形ABCD,AB>AD,AB=4,AN平分∠DAB,DM⊥AN于点M,CN⊥AN于点N.则DM+CN的值为( )
![](https://img.xkw.com/dksih/QBM/2020/9/5/2542960870342656/2550340832280576/STEM/8fd85e9592e242198beb9b69ac921c34.png?resizew=154)
![](https://img.xkw.com/dksih/QBM/2020/9/5/2542960870342656/2550340832280576/STEM/8fd85e9592e242198beb9b69ac921c34.png?resizew=154)
A.![]() | B.2![]() | C.2![]() | D.4 |
更新时间:2020-09-15 15:44:37
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【推荐1】如图,在矩形ABCD中,AB=4,AD=3,以顶点D为圆心作半径为r的圆,若点A,B,C中至少有一个点在圆内,且至少有一个点在圆外,则r的值可以是下列选项中的( )
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【推荐2】下列说法中,正确的是( )
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D.矩形的对角线一定互相垂直 |
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