已知:如图,已知
,
,
为线段
上一点,试说明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4009aa13093cc3865dcd51b371892160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef9500289a895ad4d69f113a11e7525.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/331d55a7-4c78-424a-95b6-21b2d006a6af.png?resizew=138)
更新时间:2023-12-10 21:05:19
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【推荐2】雨伞的中截面如图所示,伞骨AB=AC,支撑杆OE=OF,AE=
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【推荐1】已知:如图,
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【推荐1】如图,△ABC中,AB=AC,∠A=36°,AB的垂直平分线交AC于点D,交AB于点M,证明:△BCD是等腰三角形.
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【推荐1】如图,AD是△ABC的中线,DE⊥AC于点E,DF是△ABD的中线,且CE=2,DE=4,AE=8.
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【推荐2】已知:如图,在
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