如图,在
中,
是
的平分线E是
上一点
,
交
于点F,
与
交于点G.求证:四边形
是菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/476b0b8378f4b0f73f3dc5d84d89f616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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21-22八年级下·上海静安·期中 查看更多[7]
上海市静安区上海外国语大学苏河湾实验中学2021-2022学年八年级下学期期中数学试题(已下线)9.4 矩形、菱形、正方形-【帮课堂】2022-2023学年八年级数学下册同步精品讲义(苏科版)(已下线)22.3特殊的平行四边形(分层练习)-2022-2023学年八年级数学下册同步精品课堂(沪教版)(已下线)核心考点04 特殊的平行四边形-【满分全攻略】2022-2023学年八年级数学下学期核心考点+重难点讲练与测试(沪教版)江西省九江市2022-2023学年九年级上学期期末数学试题湖北省随州市2023-2024学年九年级下学期月考数学试题(已下线)专题06特殊的平行四边形(8大题型)【好题汇编】-备战2023-2024学年八年级数学下学期期中真题分类汇编(上海专用)
更新时间:2023-12-10 09:05:00
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【推荐1】如图,已知A、B、C、D四点顺次在同一条直线上,AE∥FD,AE=FD,AB=CD,求证:∠ACE=∠DBF.
![](https://img.xkw.com/dksih/QBM/2019/5/25/2211200352190464/2217570299273216/STEM/6c81c4850e93459e850c4ddbb8e1312a.png?resizew=141)
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【推荐2】如图,为了测量一个池塘的宽度
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,使得点
在同一条直线
上,然后在直线
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名校
【推荐1】已知,如图,矩形
中,
,
,菱形
的三个顶点
,
,
分别在矩形
的边
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,
上,
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/4/a9a80dce-6b0a-468e-9ef2-9dc13c264d3d.png?resizew=244)
(1)若
,求证:四边形
为正方形;
(2)若
,求
的面积;
(3)当
为______ 时,
的面积最小?最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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(1)若
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(2)若
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【推荐2】如图,在平面直角坐标系中,已知
,
,
.其中
,
,
满足关系式
,
.
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(1)
________,
________,
________;
(2)如果在第四象限内有一点
,使得
的面积是
面积的一半,求点
的坐标;
(3)在平面内是否存在点
,使
是以
为腰的等腰直角三角形?若存在,请直接写出点
的坐标;若不存在,请说明理由.
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(1)
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(2)如果在第四象限内有一点
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(3)在平面内是否存在点
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【推荐1】如图,在
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平分
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【推荐1】如图,在平行四边形
中,
的平分线交
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,交
于点
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【推荐2】如图,长方形纸片ABCD中,AB=4,AD=8,将纸片折叠,使顶点B与D点重合,折痕交AD于点E,交BC于点F.
(1)判断四边形BEDF的形状;
(2)求EF的长.
(1)判断四边形BEDF的形状;
(2)求EF的长.
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