1 . 如图,在正方形
中,
是
的中点,
在
上,
,连接
、
与对角线
交于点
、
,连接
、
,给出结论:①
;②
;③
;④
其中正确的个数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/330a1dbd5b7700f821750fc8192ec9bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192155e6a3aade305b76b1eb7c75e30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8df5c9bba54641ce3a58d71b47e7bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d34434f252f9347fb29f95346f994f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e062aee40ac4c426fed6ed9c316618d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/29/681ba23f-3594-4348-ae90-a101c161f83b.png?resizew=135)
A.4 | B.3 | C.2 | D.1 |
您最近一年使用:0次
名校
解题方法
2 . 已知直线l:
与椭圆
交于A,B两点,点
为椭圆的右焦点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
2022-12-27更新
|
719次组卷
|
3卷引用:浙江省名校协作体2022-2023学年高二下学期开学联考适应性考试数学试题
3 . 如图,已知边长为1的正方形
是线段
上的动点(包括端点),
分别是
上动点,且
分别是
中点,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/dcf336a8-ce19-4f8a-a0b7-f870e4b121bf.png?resizew=143)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462d9d51496fa5250f55e7368111e056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c3cc1f331dbb2248b0829039df7f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a69c4757b2b8091e189e5dd116aa5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82812a8606dac22d9d492727ce9c4b7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/dcf336a8-ce19-4f8a-a0b7-f870e4b121bf.png?resizew=143)
A.![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
2022-05-07更新
|
1236次组卷
|
2卷引用:浙江省杭州学军中学2022-2023学年高二上学期开学考试数学试题