1 . 我们把对角线互相垂直的四边形叫做垂美四边形.如图1,四边形
中对角线
于点
.所以四边形
是垂美四边形.
(1)在图1中,我们发现垂美四边形
的两组对边满足:
,请你证明这个结论;
(2)如图2,请你用(1)中的结论解决下面问题:分别以
的直角边
和斜边
为边向外作正方形
和正方形
,连接
,
,
.若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/1b1eddb6-500d-4e57-8ea4-9e2f8342ba83.png?resizew=336)
(1)在图1中,我们发现垂美四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20324c4262b72d72b6624ef90675827.png)
(2)如图2,请你用(1)中的结论解决下面问题:分别以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76899b3a0bfbbdae7cb1148ad4bf018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7a0bfc593a8a33b6cade6ba213904c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
您最近一年使用:0次
2 . 在正方形
中,两条对角线
,
相交于点O,且
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/c5a24d7d-2215-4369-9037-b62e95e4deee.png?resizew=275)
(1)如图1,若
,
,求线段
的长;
(2)如图2,将
的顶点移到
上任意一点
处,
绕点
旋转,
交
的延长线上一点E,射线
交
的延长线上一点F,连接
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/9e3788cb9abbab9fa1357e35039d23c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/c5a24d7d-2215-4369-9037-b62e95e4deee.png?resizew=275)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4fc2d383876afe5be1103352571805b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc90c2d45477e166b02359525f40aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图2,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d73e9728ffc83c9373be79f1b9537f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03da1642fb3585c867ff6e18dc9b0039.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7ced2547f586c0d3c20df8e4b13b44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24854207b9e65a1721b8dee17f97db24.png)
您最近一年使用:0次
2024-03-26更新
|
126次组卷
|
2卷引用:2023年云南省红河州中考数学一模模拟试题
3 . 【母题再现】如图
,四边形
是正方形,
是边
的中点,
,且
交正方形外角的平分线
于点
,求证:
.
【知识探究】证明:如图
,取
的中点
,连接
.
四边形
是正方形,
,
.
.
(1)请补全知识探究的证明过程.
(2)连接
,若正方形边长为
,求
的面积.
(3)连接
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7521601ac1fbc4a52d4fe44be9c8e88c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3767efa8adfb71001ad39df9560cbf6a.png)
【知识探究】证明:如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b78f2e2d1c75bb7acab615ca2da8f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ed41567ae79de341f63d33cb7f3304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8032d724d3fd498bc7aec233d71899b.png)
(1)请补全知识探究的证明过程.
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15fee7af78b5bcbaffa28143a4e41f9.png)
您最近一年使用:0次
4 . 如图①,在正方形
中,
(不与B、D重合),连接
,过点M作![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90b62aa75a1b3b42af8bb133e043bf8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/0a1e2574-85d0-44a7-9860-a35830f00abf.png?resizew=228)
(1)求证:
;
(2)若
,求证:
;
(3)如图②,连接
交
于点G.若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377f5c10cf527c87ab06bff61384f7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90b62aa75a1b3b42af8bb133e043bf8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/0a1e2574-85d0-44a7-9860-a35830f00abf.png?resizew=228)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a1d32a41a497bde9f7e65b21931be36.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da9d07909112c656d282c468028e43c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e1a8cf1e7b88ed192ff74c8c226688.png)
(3)如图②,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dafebaaf13781120dc57c277d0267c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebce4b0c878ef1e2ab7e72feb85ac471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e61957149b0163aa7dace9c34a6b1d.png)
您最近一年使用:0次
2023-11-21更新
|
72次组卷
|
2卷引用:云南省曲靖市麒麟区麒麟区第六中学2022-2023学年九年级下学期9月月考数学试题
5 . 如图,在正方形
中,
、
、H分别是
、
、
的中点,
、
交于点G,连接
,下列结论中,不正确的是( )
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/16/61facbfe-5a79-4236-b5a6-302b4a7939f8.png?resizew=152)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
6 . 在正方形
中,两条对角线
相交于点
,点
和点
分别是
上的动点,且
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/87759836-646f-4d76-8593-21a78f36bea7.png?resizew=272)
(1)如图1,若
,
,求线段
的长;
(2)如图2,将
的顶点移到
上任意一点
处,
绕点
旋转,仍满足
,
交
的延长线一点
,射线
交
的延长线上一点
,连接
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989c75a3fd02e4971cab421c88de92f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/a20cb2c77ea29b6eabbc477bc3743859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3788cb9abbab9fa1357e35039d23c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/87759836-646f-4d76-8593-21a78f36bea7.png?resizew=272)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4fc2d383876afe5be1103352571805b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc90c2d45477e166b02359525f40aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)如图2,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d73e9728ffc83c9373be79f1b9537f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea0192c176974ab255f06533cd846f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec1093f2bd72971a21411d53d4fabb1.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/da7ced2547f586c0d3c20df8e4b13b44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24854207b9e65a1721b8dee17f97db24.png)
您最近一年使用:0次
2023-11-03更新
|
88次组卷
|
3卷引用:云南省昆明市五华区云南师范大学实验中学2023-2024学年九年级上学期10月月考数学试题
7 . 如图,四边形
是正方形,对角线
,
相交于点
,
,
分别是边
,
上的动点,且
,连接
,
分别交对角线
于点
,
,连接
,
.
.
(2)当点
,
分别在
,
的什么位置时?四边形
是平行四边形,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/1dde8112e8eb968fd042418dd632759e.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/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d1125b47dec1c5e93143ee59ad862a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf2e3236ea30ee2c37928b98041f13a.png)
(2)当点
![](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/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c10f93679abcee21bacd92c3b1552a0e.png)
您最近一年使用:0次
2011·北京·一模
名校
8 . 如图,已知正方形
的对角线
相交于点O,E是
上一点,连结
,过点A作
,垂足为M,
交
于点F.
;
(2)如图2,若点E在
的延长线上,
于点M,交
的延长线于点F,其它条件不变,则结论“
”还成立吗?如果成立,请给出说明理由;如果不成立,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d0b0b7d07ac1aebab6b6f1e8c6acdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7e284eac4b90bfb327de768a7beef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf2e3236ea30ee2c37928b98041f13a.png)
(2)如图2,若点E在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7e284eac4b90bfb327de768a7beef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf2e3236ea30ee2c37928b98041f13a.png)
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39卷引用:云南省昆明市禄劝县2022-2023学年八年级下学期期中数学试题
云南省昆明市禄劝县2022-2023学年八年级下学期期中数学试题(已下线)专题05平行四边形六大模型(知识串讲+热考题型)-2022-2023学年八年级数学下学期期中期末考点大串讲(人教版)(已下线)2011年北京四中中考数学模拟数学卷22(已下线)2011-2012学年广东广州荔湾区理源中学年八年级下期中考试数学试卷(已下线)2012届湖北保康中考模拟数学试卷2014届新人教版初中数学浙江永嘉桥下瓯渠中学中考总复习二十二讲练习卷2015年人教版初中数学八年级18.2.3练习卷22014-2015学年福建省莆田市二十五中八年级下学期期中联考数学试卷湖北省麻城市张家畈镇中学2016-2017学年八年级下学期期中考试数学试题人教版初中数学八年级下册第十八章《四边形》综合测试题人教版八年级下册 第十八章 平行四边形 单元测试题黑龙江省密山市实验中学2017-2018学年八年级下学期期中考试数学试题【全国市级联考】广西柳州市2017-2018学年八年级下学期期末考试数学试卷冀教版八年级数学下册 第二十二章 四边形单元测试【校级联考】山东省济南市莱芜区牛泉镇2019届九年级(下)期中数学试题2017-2018学年河北省石家庄市鹿泉市八年级(下)期末数学试卷江苏省苏州市吴江区青云中学2019-2020学年八年级下学期线上月考数学试题人教版2019-2020学年八年级数学下册18.2.3.1 正方形的性质天津市蓟州区2018-2019学年八年级下学期期中形成性练习数学试题(已下线)【万唯原创】2015年河南省中考数学2014年真题-商丘市一中2014年第一次模拟考试宁夏回族自治区固原市原州区2019-2020学年八年级下学期期末数学试题山西省运城市景胜中学2020-2021学年八年级上学期第一次月考数学试题(已下线)期末押题02-2020-2021学年七年级数学下学期期末专项复习(沪教版)黑龙江省鹤岗市绥滨县2020-2021学年八年级下学期期末数学试题湖南省常德十一中2021-2022学年九年级上学期开学数学试题(已下线)【人教版课时练习】八年级下册数学第18章平行四边形 测试题18广西南宁市宾阳县2021-2022学年八年级下学期期中考试数学试题山东省临沂市河东区2021-2022学年八年级下学期期中数学试题贵州省铜仁市石阡县2021-2022学年八年级下学期期中数学试题广西壮族自治区南宁市2021-2022学年八年级下学期期中数学试题山东省滨州市惠民县2021-2022学年八年级下学期期末数学试题湖北省襄阳市枣阳市2021-2022学年八年级下学期期末数学试题河北省保定市雄县第一初级实验中学2021-2022学年八年级下学期4月月考数学试题(已下线)专题1.3 正方形的性质与判定(能力提升)-2022-2023学年九年级数学上册《同步考点解读·专题训练》(北师大版)山东省临沂市费县第二中学2021-2022学年八年级下学期期中数学试题2020年四川省眉山市东坡区苏辙中学中考数学模拟试卷(已下线)YHmlsjsxXJ860.pdf内蒙古自治区赤峰市翁牛特旗2023-2024学年八年级下学期期中数学试题(已下线)专题06特殊平行四边的性质与判定的综合运用解答题(精选30题)【好题汇编】-备战2023-2024学年八年级数学下学期期末真题分类汇编(天津专用)
22-23八年级下·云南临沧·期末
9 . 如图,在正方形
中,
为
上一点,连接
,交对角线
于点
,连接
,若
,则
的度数为( )
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b63d2504bd3ecce8c10560b142356f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86782e6cec93c18b4a6a0465c69a249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:云南省临沧市耿马县2022-2023学年八年级下学期期末数学试题
(已下线)云南省临沧市耿马县2022-2023学年八年级下学期期末数学试题(已下线)云南省临沧市耿马傣族佤族自治县2022-2023学年八年级下学期期末数学试题甘肃省陇南市三县联考2023-2024学年八年级下学期期中数学试题甘肃省平凉市庄浪县思源实验学校2023-2024学年八年级下学期期中数学试题
10 . 如图,在正方形
中,
,
分别是
,
的中点,
分别交
,
于点
,
,连接
恰好过点
,则下列结论:①
;②
;③
;④
,其中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.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/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a679040c4d556723e482bacbab41356d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a89967478b257a48113ebadd0b6acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9641ebe7d06fdd05cee064eb1639834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa738f2999f63fb051d5614b4e810ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8689d619c2508c9000531fc1b8f1f21c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/22/0fd3e3da-3217-42f4-8541-937017359454.jpg?resizew=115)
A.①③④ | B.②③④ | C.①②③ | D.①②④ |
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