如图,以点O为对称中心作矩形
,
为其对角线.点M、N分别在矩形的边
、
上,且直线
经过点O,过点D作
于H,连接
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/f32e1559-f146-40d8-b185-42a5ca2c9e04.png?resizew=163)
(1)若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d715af2d0f55f1f8855361afee3fd0f.png)
______
;
(2)在(1)的条件下,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a447cd7d35c87c29590a75468adcaf3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/3/f32e1559-f146-40d8-b185-42a5ca2c9e04.png?resizew=163)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcfb6ce695187d788d4c3d73db75f1ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d715af2d0f55f1f8855361afee3fd0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b34d97248691efc7a92bdd3ec5dab082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97bd1bbf25dab6e67584122720f8308f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
23-24九年级下·北京·开学考试 查看更多[2]
更新时间:2024-04-05 21:37:00
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名校
【推荐2】如图,在
中,
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【推荐1】如图,在菱形
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