如图,在
中,D是斜边
的中点,E是
上一点,F是
的中点.若
,
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eddf629bfb2d7b9daea6f2c1553360af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30e50e094cd2849e38859b36aad0b0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ade06068471a9d76e32b417bef7551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
A.2.5 | B.3 | C.3.5 | D.4 |
更新时间:2024-03-28 12:07:34
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【推荐1】如图,在Rt△ABC中,∠BAC=90°,点D、E、F分别是三边的中点,且DE=4cm,则AF的长度是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/97eb031c-0a41-42e4-b0d7-59bae4804bf0.png?resizew=186)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/97eb031c-0a41-42e4-b0d7-59bae4804bf0.png?resizew=186)
A.2cm | B.3cm | C.4cm | D.6cm |
您最近一年使用:0次
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【推荐2】菱形ABCD中,对角线AC,BD相交于点O,E为AB的中点.若菱形ABCD的周长为32,则OE的长为( )
A.4 | B.5 | C.6 | D.8 |
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【推荐1】如图,在
中,
,
于点E,F为
的中点,连结
,
.有下列四个结论①
;②
;③
;④
其中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3ba8b214034c287276f4966069d95e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262bd138aa9aad3b0ec2f3d094bfbf0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4eccda4edcee29a5f15609e85106df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c98b148518587d61a2907cdfd6ee4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f586a2079d0e382ef843f4dbe068566e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714434d755783c4d42a3672ffe1c4f82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4356224fa5f3b333908a4222529c820.png)
A.①②③ | B.①③④ | C.②③④ | D.①②④ |
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【推荐2】如图,菱形ABCD的两条对角线AC,BD相交于点O,E是AB的中点,若AC=6,菱形ABCD的面积为24,则OE长为( )
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721353423396864/2786907763351552/STEM/f532b648-6659-40fd-8d33-7a0e9bf9fc11.png)
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721353423396864/2786907763351552/STEM/f532b648-6659-40fd-8d33-7a0e9bf9fc11.png)
A.3.5 | B.3 | C.2.5 | D.2 |
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