如图,已知在
中,
,点
为直角边
的中点,点
为
形内的一个动点,点
为
的中点,若
,
,
,当
取得最小值时,
的度数为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a7c043568fa59967d1cf74ceb310f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2154f7957491a03cc353b0192f17c30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e520cef3cebf757a24737ffb661834.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/12/a225f162-b6c6-45a7-b3ad-5632c5556e8f.png?resizew=158)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-11-08 14:59:57
|
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【推荐1】如图,在等腰直角
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,点P在
的边上,则满足
的点P的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】如图,在平面直角坐标系中,点A、B的坐标分别为
,
,若x轴上有两个动点M、N(M在N的左侧),且
,则当
取最小值时,点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80991c1f0c963104740e50cfff6f29a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8642b9c72f79feaf75d2b3de1cc5db94.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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【推荐1】如图,在
中,
,
,
,点
为
的中点,以点
为圆心作圆心角为
的扇形
,点
恰在弧
上,则图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/9d68abc3-c2fe-4a55-a4da-5103b188cb4d.png?resizew=148)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14af6bf74442941c372bb708bcdcb5e6.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐2】如图,P是
平分线上一点,OP=10,
,在绕点P旋转的过程中始终保持
不变,其两边和OA,OB分别相交于M,N,下列结论:①
是等边三角形;②MN的值不变;③OM+ON=10;④四边形PMON面积不变.其中正确结论的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff5c21185c13eae675906dabd3593c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add60595ecea5d00ff1fbb2a5409be73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
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单选题
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【推荐1】如图,在矩形ABCD中,对角线AC,BD交于点O,
,点E在边AD上,
,点F在边BC上,将四边形CDEF沿EF所在的直线翻折,点D恰好落在点O处,点C落在点
处.下列结论中,正确的有( )
①
;②过点O作
于点P,
是等腰直角三角形;③AB的长为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/20bf7b44-3829-4238-920a-f527a5bcebfe.png?resizew=217)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51630723c81c43652cac2d31c6f4a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689b95a2eeb841dd3a0a3a6dfa3be8fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7dcb61dc35ff9bf34d31fe3a347534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6005785b4231a7018d870b8aa6e117e.png)
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【推荐2】如图,在
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