如图,一架梯子
斜靠在某个走廊竖直的左墙上,顶端在点A处,底端在水平地面的点B处.保持梯子底端B的位置不变,将梯子斜靠在竖直的右墙上,此时梯子的顶端在点D处,连接
,F是线段
的一点,且
.若
m,
m,顶端D距离地面的高度
比
少
m,则下列结论不成立的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/d37adb09-fc39-478e-ac29-0de717f50cc7.png?resizew=125)
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe446a0456e9168028baee032d8d7d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df375f99843ea8e0fa5daa3dcfbd985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec818fc0754296163206e1e8870f9e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/d37adb09-fc39-478e-ac29-0de717f50cc7.png?resizew=125)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
更新时间:2023-04-13 20:01:02
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【推荐1】如图,在矩形
中,
于
,
,且
,则
的长度是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/def7a64d-0483-4261-bef5-24be5b449265.png?resizew=321)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/def7a64d-0483-4261-bef5-24be5b449265.png?resizew=321)
A.3 | B.4 | C.![]() | D.![]() |
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【推荐2】如图,在平行四边形ABCD中,用直尺和圆规作∠BAD的平分线AG交BC于点E,若BF=6,AB=5,则AE的长为( )
A.4 | B.8 | C.6 | D.10 |
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【推荐1】如图,在矩形
中,
交于点O,过点B作
于点M,交
于点F,过点D作
交
于点E,连接
,若
,有下列结论:①
; ②
;③
; ④ 四边形
是菱形;其中正确结论的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/15/d03ffb7b-18aa-4231-ae05-cadd6bba076b.png?resizew=190)
A.3个 | B.2个 | C.1个 | D.0个 |
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【推荐2】如图,在边长为
的正方形
中,E是
中点,
、
交于点F,则
的面积等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/0f3e64c0-123b-41d5-8fcf-b73552697915.png?resizew=121)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
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A.![]() | B.2 | C.![]() | D.3 |
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