如图,在平行四边形ABCD中,E为AB边上的中点,连接DE并延长,交CB的延长线于点F.
![](https://img.xkw.com/dksih/QBM/2018/8/21/2015289988939776/2016877941006337/STEM/30b95fa96f88459eac942976487e25dc.png?resizew=170)
求证:
;
若平行四边形ABCD的面积为32,试求四边形EBCD的面积.
![](https://img.xkw.com/dksih/QBM/2018/8/21/2015289988939776/2016877941006337/STEM/30b95fa96f88459eac942976487e25dc.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd92e9763c832dfa830abc3b4089e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
2018·青海·中考真题 查看更多[6]
青海省2018年中考数学试卷(已下线)专题28 相似三角形中的判定和性质(九年级上重点突破)北师大版(已下线)【万唯原创】平行四边形与多边形·基础必练(二)(已下线)【万唯原创】2019年陕西省中考试题-试题研究-第五章1下(已下线)【万唯原创】平行四边形与多边形·满分特训(一)(已下线)【万唯原创】平行四边形与多边形·满分特训(二)
更新时间:2018-08-23 22:51:35
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【知识点】 平行四边形的性质
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解答题-问答题
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适中
(0.65)
【推荐1】如图,在平行四边形ABCD中,过点A作AE⊥BC,垂足为E,连接DE,F为线段DE上一点,且∠AFE=∠B.
(1)在图中找出一对相似三角形,并说明理由;
(2)若AB=8,AD=
,AF=
,求AE的长.
(1)在图中找出一对相似三角形,并说明理由;
(2)若AB=8,AD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27567d43c5b91382ee3d7ca708ee422.png)
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![](https://img.xkw.com/dksih/QBM/2020/6/5/2477977677258752/2479062611025920/STEM/a38b62e49e64477facd63f98b8b606df.png?resizew=214)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,
的面积为12,
,
.点M在边AB上(点M与点A不重合),连结DM,作点A关于直线DM的对称点
,连结
、
.
![](https://img.xkw.com/dksih/QBM/2022/5/31/2991227185659904/2992254938161152/STEM/7f74854a-64e7-44a1-81f5-ea9f8eba5bc3.png?resizew=224)
(1)点D到直线AB的距离是______.
(2)设点
到直线BC的距离为d,求d的最小值.
(3)当点
落在
的边上时,求AM的长.
(4)当直线
与
的一边垂直时,直接写出AM的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a21897349d3d7c94419692106887153.png)
![](https://img.xkw.com/dksih/QBM/2022/5/31/2991227185659904/2992254938161152/STEM/7f74854a-64e7-44a1-81f5-ea9f8eba5bc3.png?resizew=224)
(1)点D到直线AB的距离是______.
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
(4)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42198b8e646ccfbbec323fd364c4d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
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