已知四边形
为矩形,延长
到E,使
,连接
,F为
的中点,连接
交
于点G,下列结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/2db177ab-d91b-4237-9e84-37d5239c9ad7.png?resizew=188)
(1)
;(2)
;(3)
;(4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242f45d5e952081c17a97d75747c556f.png)
其中正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03ca3e334c5290ab28b4b4a883c90c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2959c20ab42c50160811d6a4140cfac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/2db177ab-d91b-4237-9e84-37d5239c9ad7.png?resizew=188)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be586388f6eee23970566227dcb6ac01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d15fdf0ca13c3f837f09e949cf934b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b63955ef72cc98135d2653b744a857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242f45d5e952081c17a97d75747c556f.png)
其中正确的个数是( )
A.1 | B.2 | C.3 | D.4 |
更新时间:2024-04-08 10:17:06
|
相似题推荐
单选题
|
较难
(0.4)
名校
【推荐1】如图,等边
内部有一点
,
,
,
,在
、
上分别有一动点
、
,且
,则
的最小值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/acbe5131-5c98-4b52-818d-91e62383c429.png?resizew=128)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262e062dcdd2039084a356862b123e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49437f474e5805688dff21ded2d1fd7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5bffff8f73d6d85dfafd4e9ad43adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/d38d97f03faed3152db2fd3bd1919944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/506bbc434d386f2d8e10607b70c56c18.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/acbe5131-5c98-4b52-818d-91e62383c429.png?resizew=128)
A.5 | B.![]() | C.![]() | D.7 |
您最近一年使用:0次
单选题
|
较难
(0.4)
名校
【推荐2】如图,四边形ABCD、CEFG都是正方形,点G在线段CD上,连接BG,DE和FG相交于点O.设AB=a,CG=b(a>b).下列结论:①△BCG≌△DCE;②BG⊥DE;③
;④(a﹣b)2•S△EFO=b2•S△DGO.其中结论正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/5f925704-2446-41c7-88c6-1242d48b8b74.png?resizew=133)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50305d6ff9a5b4c02c4ff4238582e8fb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/5f925704-2446-41c7-88c6-1242d48b8b74.png?resizew=133)
A.4个 | B.3个 | C.2个 | D.1个 |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐1】如图,在
中,
,
平分
交
与点G,
平分
交
于点D,
、
相交于点F,
交
的延长线于点E,连接
,下列结论中正确的是( )
①若
,则
;②
;③
;④
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/14dc8b23-901e-4c09-96d3-dd0c1be5d8ae.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26fdd8e57562ba94e10e7f1d770826d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93245f11637108d665be180fbeff4d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b4be7cfa6d7dc4b12e0b30fb74d48f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858bdea7919111e110139722b230cf39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baa78102fbf44d3f12c252b14d85a9bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a702c324e0c76150540c3d32df802077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be18834a9fcd8117688df3c38eadbe84.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/14dc8b23-901e-4c09-96d3-dd0c1be5d8ae.png?resizew=157)
A.4个 | B.3个 | C.2个 | D.1个 |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐2】如图,在扇形
中,点D在
上,点C在
上,
.若
,则
的半径为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/a3d7f602-78d9-47c3-93e0-48f5631a43ce.png?resizew=133)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a44aa6beb0b8948618d252e7b765de6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633e5c664d899211f1885603fb34d33d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b927ccd557b25d6d5f5a90a8acf961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/a3d7f602-78d9-47c3-93e0-48f5631a43ce.png?resizew=133)
A.4 | B.![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐1】如图,在矩形
中,E是
边的中点,
,垂足为F,连接
,分析下列四个结论,①
,②
;③
;④
.其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/41c4556c-6572-4ef2-b148-e336621ec7a2.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d320f180419175d75eebc618cc458b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d2579e4f5268621f9cb5534c5ce8b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7611391918a3aec67fe832b38225891a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e94399c4924cf2a862737a2825fe4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5b7b242d50273608e50140c2451c76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/41c4556c-6572-4ef2-b148-e336621ec7a2.png?resizew=155)
A.4个 | B.3个 | C.2个 | D.1个 |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐2】如图,长方形
中,
,点E是一个动点,且
的面积始终等于长方形
面积的四分之一.若
的最小值为10,则
的面积是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09faca8dd467e0e6bb3cdeb0e7d8308e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd75c2244c18120b8fc35d5d309ab66.png)
A.10 | B.12 | C.14 | D.16 |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐1】几千年来,在勾股定理的多种证明方法中,等面积法是典型的一种证法,清代数学家李锐运用这一方法借助三个正方形也证明了勾股定理.如图,四边形
,四边形
,四边形
均为正方形,
交
于点
交
于点K,点
在同条直线上,若
,
,记四边形
的面积为
,四边形
的面积为
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/13aee3c5-6b80-406a-915f-bcbe983e313c.png?resizew=287)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c71daa0de8fcc822255f42aabab816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/772850cc9aaf534c0572b8dc682963f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892e37a8f937098ad3a2b8e60d59b14d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c0eacd6b4319b13e3e23cd91108e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/486f306c620595a4c14ea1d76a0f8115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da66b72dc4927607c1b6f1a575b571c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2f747df3c26e41ec198dc760c9d1d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3061a3838bb29f0166c9a11be65819a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/13aee3c5-6b80-406a-915f-bcbe983e313c.png?resizew=287)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
真题
名校
【推荐2】如图,把某矩形纸片
沿
,
折叠(点E、H在
边上,点F,G在
边上),使点B和点C落在
边上同一点P处,A点的对称点为
、D点的对称点为
,若
,
的面积 为8,
的面积为2,则矩形
的长为( )
![](https://img.xkw.com/dksih/QBM/2020/7/27/2514886152372224/2514918335889408/STEM/aad8b6021eda4ab98e591cb25586e0ed.png?resizew=207)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c131b4133ccca2de355526f50a94d82e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89650b7446730dba4c68e4436801c3cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b88e4392f8c83684f259d55e7f01a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2020/7/27/2514886152372224/2514918335889408/STEM/aad8b6021eda4ab98e591cb25586e0ed.png?resizew=207)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次