如图,四边形
是菱形,
交于点
交
于点
,连接
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e80bb0f244f283cd4c3faf809ba488d.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d578394cd8e4d7a705599269c512960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2c196558bb2b32ef268adacc66223e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ea70f09ac648b18963e473dbccd381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e80bb0f244f283cd4c3faf809ba488d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/bb4f20c0-0cba-4de9-9d5c-5f21dcf3fcf4.png?resizew=135)
更新时间:2024-03-01 13:52:39
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②
与
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③四边形DEGF的面积是
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④
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![](https://img.xkw.com/dksih/QBM/2021/5/27/2729995067949056/2793146317783040/STEM/5e862488-2d37-4190-893b-480125458364.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f3fbb2fdd9b947f14e047f3210d6ff.png)
对于下列结论:
①F是OA的中点:
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771573280033454e2e005ba0b9b10715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20227c155003de7163d407daf0a5e74.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d754c4ad51e4482e12a615d20a13fb.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0f572db5c9ca057212b60d9c2163e7.png)
![](https://img.xkw.com/dksih/QBM/2021/5/27/2729995067949056/2793146317783040/STEM/5e862488-2d37-4190-893b-480125458364.png)
正确的是
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