如图,四边形
是一个正方形,
、
分别在
、
边上,且
.
、
交于
点.
![](https://img.xkw.com/dksih/QBM/2020/8/23/2534025279373312/2540868548681728/STEM/9afd748767304c2a9a274702b6f2ccdd.png?resizew=137)
(1)求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1db2c0955e5a5be47faf855bca738a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2020/8/23/2534025279373312/2540868548681728/STEM/9afd748767304c2a9a274702b6f2ccdd.png?resizew=137)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e444739e269a94733b2b0598b559313.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
更新时间:2020-09-02 06:33:12
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图,已知
中
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/3a6c991c-4de1-48b6-9c6c-5bde3c629976.png?resizew=109)
(1)作图:在
上有一点D,延长
,并在
的延长线上取点E,使
,连接
,作
的平分线
,
交
于点F(用尺规作图,保留作图痕迹,不写作法);
(2)在(1)的条件下,连接
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/3a6c991c-4de1-48b6-9c6c-5bde3c629976.png?resizew=109)
(1)作图:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6344778ed1e75c1a99e2268468081867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(2)在(1)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f58fc1cb18cbddce035a879c0a6cc7e.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】在
中,
,
,
为
内一点,将
绕点
按逆时针方向旋转角
得到
,点
的对应点分别为点
.
(1)如图1,若
三点在同一直线上,则
_________(用含
的代数式表示);
(2)如图2,若
三点在同一直线上,
,过点
作
于点
,探究线段
之间的数量关系,并证明你的结论;
(3)如图3,连接
,若
,
,
,将
绕点
旋转一周,当
时,
____________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c029e4ab80f8a2080d59ba73841f364f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4a514e2e338c6fa31c9938624a4a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd0c32d9f3badb7e51233dd39a39fbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4d66f08b03a5f0090140fb941256f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea86bf4a863b4cdb982fc96b5e6680b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/16/dfcd2951-7578-4ae6-8788-60e4fb4ddd95.png?resizew=431)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97abfa129fa9c284b159ac68a35fd60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4ea2f99b7326d71004ef9bd4f39d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97abfa129fa9c284b159ac68a35fd60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac762a2899a58faa0d3ab44f1281fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c23e376ab222814e0029d2adb5a957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e17b4aaf36fdc1cf5280bce90a79c0.png)
(3)如图3,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cf714ffb3fd5917a76b191640b55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70991469d431e7b525d374d2cefd122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d5fcee996a47e9cc3cfd4ba108f21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f76e37d6e6b182896ccaaa187cfe07.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,四边形ACFD是一个边长为b的正方形,延长FC到B,使BC=a,连接AB,使AB=C;E是边DF上的点且DE=a.
(1)判断△ABE的形状,并证明你的结论;
(2)用含b的式子表示四边形ABFE的面积;
(3)求证:a2+b2=c2.
(1)判断△ABE的形状,并证明你的结论;
(2)用含b的式子表示四边形ABFE的面积;
(3)求证:a2+b2=c2.
![](https://img.xkw.com/dksih/QBM/2021/5/22/2726514451808256/2772397464322048/STEM/2f9b7d12-a290-4bc5-8671-7f0dbb20d2a1.png?resizew=243)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】在正方形
中,点
是直线
上动点,以
为边作正方形
,
所在直线与
所在直线交于点
,连接
.
(1)如图1,当点
在
边上时,延长
交
于点
,
与
交于点
,连接
.
①求证:
;
②若
,求
的值;
(2)当正方形
的边长为4,
时,请直接写出
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
(1)如图1,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/310f85e82734a90d96620be879916b27.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4719f526db276272b93ca64f1d7455f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82048a3018dc72604697da33802f08ab.png)
(2)当正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1364213f546b37f8764ddcb59e36ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://img.xkw.com/dksih/QBM/2020/2/21/2404028666101760/2404580562984960/STEM/ab57c27187cd4602911802dba269a54b.png?resizew=394)
您最近一年使用:0次