已知,如图1图2,在等腰三角形ABC中,AB=AC.平面内任意一点D,连接AD,点E是AD的中点.△ABC的角平分线AP交BC于点P,点F是射线AP上的一个动点,且AF﹥AP.若G,H是射线BC上的两个动点(点G在点H的左侧),GH=AF,点M始终是GH的中点,连接G,F,H,D,四边形GFHD是平行四边形.
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966632773361664/2968505829687296/STEM/2224a858-272f-44ea-bd53-f6d10a11a34d.png?resizew=543)
【感知探究一】
(1)如图1,当点D在线段AP上时,ME与GM的位置关系为______,ME与GM的数量关系为________
【感知探究二】
(2)如图2,当点D不在射线AP上时,连接ME,试问ME与GM的数量关系和位置关系怎样?请说明理由;
【应用升华】
(3)如图3,在△ABP中,BC⊥AP于点M,DC⊥BC于点C,MC=AP,PM=DC,连接AD,点E是AD中点,连接ME,若ME=4,AB=
.
,求DC的长.
![](https://img.xkw.com/dksih/QBM/2022/4/26/2966632773361664/2968505829687296/STEM/2224a858-272f-44ea-bd53-f6d10a11a34d.png?resizew=543)
【感知探究一】
(1)如图1,当点D在线段AP上时,ME与GM的位置关系为______,ME与GM的数量关系为________
【感知探究二】
(2)如图2,当点D不在射线AP上时,连接ME,试问ME与GM的数量关系和位置关系怎样?请说明理由;
【应用升华】
(3)如图3,在△ABP中,BC⊥AP于点M,DC⊥BC于点C,MC=AP,PM=DC,连接AD,点E是AD中点,连接ME,若ME=4,AB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d4e574c9d139615d991a168cfbf63b.png)
更新时间:2022-04-29 11:03:28
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(1)试判断
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【推荐1】数学课上,在学习了矩形的定义“有一个角是直角的平行四边形是矩形”后,老师要求同学们用矩形的定义来证明:“对角线相等的平行四边形是矩形.”以下是小强的证明过程(缺图形、求证和证明过程),请你把缺少的内容补充完整.
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【推荐2】如图,△ABC中,D为BC边上的点,∠CAD=∠CDA,E为AB边的中点.
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【推荐1】如图,在平面直角坐标系中,抛物线
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