如图,在
中,
,点
在斜边
上,以
为直径的半圆
与
相切于点
,与
相交于点
,连接
.若
,
,则
的长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/ce4879b2-310a-40f2-a43c-2c0b2a829757.png?resizew=174)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/ce4879b2-310a-40f2-a43c-2c0b2a829757.png?resizew=174)
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更新时间:2024-03-10 17:56:13
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【推荐1】如图,矩形ABCD中,G是BC的中点,过A、D、G三点的圆O与边AB、CD分别交于点E、点F,给出下列说法:(1)AC与BD的交点是圆O的圆心;(2)AF与DE的交点是圆O的圆心;(3)BC与圆O相切,其中正确说法的个数是( )
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:
:
,
:
:
,以
,
为邻边作平行四边形
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的面积为
,则
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【推荐2】如图,在矩形
中,
,延长
至点
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,以
为直径的半圆
交
延长线于点
.欧几里得在《几何原本》中利用该图得到结论:矩形
的面积等于
的平方(即
).现连结
并延长交
于点
,若
,则
与矩形
的面积之比为( )
![](https://img.xkw.com/dksih/QBM/2023/6/8/3255394613026816/3262227303858176/STEM/09aff70451c245dfae503a992230c1a0.png?resizew=202)
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