如图:已知AB=10,点C、D在线段AB上且AC=DB=2;P是线段CD上的动点,分别以AP、PB为边在线段AB的同侧作等边△AEP和等边△PFB,连接EF,设EF的中点为G;当点P从点C运动到点D时,则点G移动路径的长是( )
![](https://img.xkw.com/dksih/QBM/2020/8/15/2528592060792832/2530608014606336/STEM/ac60e38511d94994b3e5ac4af439d6f1.png?resizew=174)
![](https://img.xkw.com/dksih/QBM/2020/8/15/2528592060792832/2530608014606336/STEM/ac60e38511d94994b3e5ac4af439d6f1.png?resizew=174)
A.5 | B.4 | C.3 | D.0 |
19-20九年级上·四川攀枝花·期末 查看更多[2]
更新时间:2020-08-18 18:38:05
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【推荐1】如图,在正方形ABCD中,△BPC是等边三角形,BP、CP的延长线分别交AD于点E、F,连结BD、DP,BD与CF相交于点H.给出下列结论:①∠PDE=15°;②△BDE∽△DPE;③
;④tan∠DBE=2﹣
.其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/2022/4/14/2957828592099328/2958337859067904/STEM/b1f3e38c3d3646cab599c0bd14a51e1b.png?resizew=121)
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A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐2】如图,
ABC中,AB=a,AC=b,BC=5,∠BAC=90°,
ABD,
ACE,
BFC都是等边三角形,则四边形ADFE面积的最大值是( )
![](https://img.xkw.com/dksih/QBM/2022/3/31/2948200459739136/2965077086363648/STEM/7f6c2c00-4f76-4968-831d-6ca943fbebb9.png?resizew=209)
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A.12.5 | B.6.25 | C.25.5 | D.12.25 |
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【推荐1】如图,已知
是等边三角形.点D、E分别在边
、
上,且
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并延长至点F,使
.连接
、
.连接
并延长交
于点G.下列结论:①
;②
;③
;④若
,则
.其中正确的个数是( )个.
![](https://img.xkw.com/dksih/QBM/2023/4/26/3224684570681344/3254088730533888/STEM/6ca49b5fb3e64351b1898ec8d973d88c.png?resizew=181)
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真题
【推荐2】如图,
是线段
上一点,
和
是位于直线
同侧的两个等边三角形,点
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的中点.若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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【推荐1】如图,正方形
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【推荐2】如图,在Rt△ABC中,∠ACB=90°,AC=3,BC=4直径l经过点B,AE⊥l于点E,CF⊥l于点F,则AE+CF的最大值为( )
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