如图,四边形ABCD中,
,过点D作
交AB于点E,
交BC于点F.
(2)若
,求四边形EBFD的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571cad8f824853e1ca93d81d3f0c1599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cad97dd9d9593fa01342550aba6ec47.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc79f692232d300459abbb3f85859654.png)
更新时间:2022-07-16 18:24:31
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图1:点E是正方形
上任意一点,以
为边作正方形
,连接
,点M是线段
的中点,射线
于
交于点H,连接
.
(1)请直接写出线段
与
的关系.
(2)把图1中的正方形
绕点D顺时针旋转
,此时点F恰好落在线段
上,如图2,其他条件不变,(1)中的结论是否成立,请说明理由.
(3)把图1中的正方形
绕点D顺时针旋转
,此时点E,G恰好分别落在线段
上,连接
,如图3其他条件不变,若
,直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/15/63bae696-e14c-4f98-8d5e-58bfd9ee9aa7.png?resizew=362)
(1)请直接写出线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
(2)把图1中的正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)把图1中的正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e545f31f7cc57a31843f5adfd02941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd8240891b14968834542a1d89c417f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图①,点P是等腰
直角边
上的一点,连接
,以
为腰作等腰
,(顺时针方向依次为点P,A,Q),
是直角三角形,过点Q作
,垂足为点E.连接
,交
于点F.
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734499679977472/2734908716408832/STEM/e6a87471-952a-4143-9265-ffdeea55ec8e.png)
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734499679977472/2734908716408832/STEM/41e6cd45-bf6f-45c2-88b8-fb885165dd75.png)
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734499679977472/2734908716408832/STEM/a4f759e3-a695-4897-9657-6a4946a08490.png)
(1)如图①,找出图中的全等三角形,并证明.
(2)如图②,请证明
;
(3)如图③,当点P是
延长线上的一点时,请根据题意画出示意图,再直接写出
,
和
之间的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7217329855bce7154bf2c06eabb03a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5135b0b4f25d7f5e0077e4fa33216624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ce2e057f17b7d9101637f48453c7bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734499679977472/2734908716408832/STEM/e6a87471-952a-4143-9265-ffdeea55ec8e.png)
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734499679977472/2734908716408832/STEM/41e6cd45-bf6f-45c2-88b8-fb885165dd75.png)
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734499679977472/2734908716408832/STEM/a4f759e3-a695-4897-9657-6a4946a08490.png)
(1)如图①,找出图中的全等三角形,并证明.
(2)如图②,请证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184b504911b1d13415578895e011431c.png)
(3)如图③,当点P是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图所示,在四边形
中,
,
的平分线
交
于点
,连接
.
(1)求证:四边形
是菱形;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a434f1d712e3da2e5a75a8f047e409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7015b6d131df8b47771defc4c41e13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2018/4/4/1916936427446272/1920222378639360/STEM/b77de1ecf08c40289eb3db434c8dea12.png?resizew=208)
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解答题-证明题
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适中
(0.65)
【推荐2】如图,O是▱ABCD对角线BD上的一点,且∠AOC=2∠ABC,OC=OD,连接OA.
(1)求证:▱ABCD是菱形;
(2)求证:CD2=OD•BD.
(1)求证:▱ABCD是菱形;
(2)求证:CD2=OD•BD.
![](https://img.xkw.com/dksih/QBM/2020/11/10/2589704629010432/2595606004170752/STEM/26f0ba919bc740848cc0a1282e8b6106.png?resizew=179)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐1】如图所示,在矩形ABCD中,EF是BD的垂直平分线,BD=40米,EF="30" 米,求四边形BEDF的面积.
![](https://img.xkw.com/dksih/QBM/2015/7/24/1573884771213312/1573884777668608/STEM/3968339a50054a199e654905e4e595ce.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐2】已知,如图,菱形ABCD中,E、F分别是CD、CB上的点,且CE=CF;
![](https://img.xkw.com/dksih/QBM/2019/3/27/2169617457119232/2176051697065984/STEM/41975e60465c499eb6242587a16166d9.png?resizew=190)
(1)求证:△ABE≌△ADF
(2)若菱形ABCD中,AB=4,∠C=120°,∠EAF=60°,求菱形ABCD的面积.
![](https://img.xkw.com/dksih/QBM/2019/3/27/2169617457119232/2176051697065984/STEM/41975e60465c499eb6242587a16166d9.png?resizew=190)
(1)求证:△ABE≌△ADF
(2)若菱形ABCD中,AB=4,∠C=120°,∠EAF=60°,求菱形ABCD的面积.
您最近一年使用:0次