如图,在平行四边形
中,
![](https://img.xkw.com/dksih/QBM/2022/6/7/2996093235732480/3083148135243776/STEM/7cc5554c224e460fbda83140ef2a0033.png?resizew=171)
(1)若点E、F是
、
的中点,连接
、
,求证:
;
(2)若
平分
且交边
于点F,如果
,
,试求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2022/6/7/2996093235732480/3083148135243776/STEM/7cc5554c224e460fbda83140ef2a0033.png?resizew=171)
(1)若点E、F是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
21-22八年级下·江苏盐城·阶段练习 查看更多[8]
江苏省盐城市射阳县盐城中学新洋分校2021-2022学年八年级下学期5月月考数学试题(已下线)专题18.6 平行四边形的判定(基础篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(人教版)(已下线)专题9.9 平行四边形(基础篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(苏科版)(已下线)9.3 平行四边形(第2课时)(练习)-2022-2023学年八年级数学下册同步精品课堂(苏科版)(已下线)专题4.12 平行四边形的判定定理(基础篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(浙教版)(已下线)专题19.9 平行四边形的判定(基础篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(沪科版)(已下线)数学(吉林卷)-学易金卷:2023年中考第一次模拟考试卷(已下线)专题6.6 平行四边形的判定(基础篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(北师大版)
更新时间:2022-10-08 10:23:51
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【推荐1】已知:如图,在□ABCD中,∠ABC、∠ADC的平分线分别交AD、BC于点E、F. 求证:BE
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【推荐1】D、
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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名校
【推荐2】如图,矩形
的对角线
与
相交于点
,延长
到点
,使
,连接
.
(1)求证:四边形
是平行四边形;
(2)
,平行四边形
的周长是______.
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(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/945e93c9f3515ded840de09a9ba81ce8.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ff5cba302fd26bbe76ffe02fdf37a7.png)
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