1 . 如图,在中,
,
的平分线交
于点D,
垂直平分
,垂足为E,若
,求
的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/30/80e35094-f65c-406e-8c33-e40b9526c718.png?resizew=140)
您最近一年使用:0次
2 . 如图,四边形区域是青岛音乐广场的一部分,现在要在这一区域内建一个喷泉,要求喷泉到两条道路
,
的距离相等,且到入口
、
的距离相等请确定喷泉的位置
.
结论:______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/30/efd2492c-948d-4c49-9fa7-17aa28069708.png?resizew=186)
结论:
您最近一年使用:0次
3 . 如图,中,
,
分别为
的垂直平分线,E、G分别为垂足.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c36ff76f9f1ee12db562cde7a58b8c3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592849d99e570c23906687097b1072ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
4 . 如图,在平面直角坐标系中,点A的坐标是
,点M是x轴上一动点,连接
,作线段
的垂直平分线
,过点M作x轴的垂线
,记
,
的交点为点P,改变点M的位置,可以得到相应的点P,设点P的坐标是
,则y关于x的函数解析式为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4fd84394e897ebf6c4814b841d427b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d9aa1d34d66a6876aa0566c8fc8b0a.png)
您最近一年使用:0次
2024-03-28更新
|
34次组卷
|
2卷引用:2023年辽宁省大连市九年级模拟适应性考试数学模拟预测题
名校
5 . 如图,已知
是
的角平分线,
的垂直平分线交
于点F,交
的延长线于点E.以下四个结论:(1)
;(2)
;(3)
;(4)
.以上恒成立的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/fd3d7e9d-5240-47dd-b431-aad176a0022d.png?resizew=219)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fed26111f78f74696b3d347196a63d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b3f839ce88bf970aceb44ab939bd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881b0d47457539e98db917b95c186eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08aa8f8e40a744c91eb897d06f6dde1d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/fd3d7e9d-5240-47dd-b431-aad176a0022d.png?resizew=219)
A.(1)(2) | B.(2)(3)(4) | C.(1)(2)(4) | D.(1)(2)(3)(4) |
您最近一年使用:0次
6 . 如图,在
中,
分别垂直平分
和
,交
于M、N两点,
与
相交于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/ef8a90c2-f697-4c4a-b79a-18faf49fbc08.png?resizew=301)
(1)若
的周长为
,求
的长;
(2)若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579c40cc83f7281d9b1c417bf314dd83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/ef8a90c2-f697-4c4a-b79a-18faf49fbc08.png?resizew=301)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12225a1a1eda07908309f8100cc34726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc31bf4b6ed8cf336432a5a2791e67e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2965dcbc436b5e4fc20cd4a894c6b89a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f8eff113ca3f0d0200253c7c2f5a7a.png)
您最近一年使用:0次
7 . 如图,四边形
是平行四边形,
是其对角线.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/5e508535-830c-4875-9deb-489ff6c069b5.png?resizew=213)
(1)用尺规完成以下基本作图:作
的垂直平分线
,分别交
,
,
于点
,
,
;(保留作图痕迹,不写作法)
(2)求证四边形
是否为菱形.
解:四边形
为菱形.证明如下:
∵四边形
是平行四边形,
∴①______________,
∴
.
∵②______________,
∴
,
,③______________.
在
与
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ec0d550858f50f8096e16585e334e.png)
∴
,
∴⑤______________,
∴
,
∴四边形
是菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/5e508535-830c-4875-9deb-489ff6c069b5.png?resizew=213)
(1)用尺规完成以下基本作图:作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/d40b319212a7e7528b053e1c7097e966.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/1dde8112e8eb968fd042418dd632759e.png)
(2)求证四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
解:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
∵四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
∴①______________,
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18c51dfb527bc2519fbfea925c5d8d4.png)
∵②______________,
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9ea68dbddf33f0fed8f35a1fd5c90b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba11242dcc61d3c7c3555b598b5fdc89.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74625390340982140e449e07663579a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c525358262126a51fbb598d58f3e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ec0d550858f50f8096e16585e334e.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748480d59e7049430b10c94530a820fd.png)
∴⑤______________,
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671eab9d0b5621d93972b7e62b816766.png)
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
您最近一年使用:0次
8 . 如图,在菱形
中,点
为对角线
,
的交点,
,
,动点
从点
出发,以每秒
个单位长度的速度沿
方向运动;同时,动点
从点
出发,以相同的速度沿
方向运动.过点
作
的垂线,分别交
,
于点
,
.设运动时间为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/1a669da5-05ff-4d95-befb-421c2cea1ea0.png?resizew=138)
(1)当
为何值时,点
在线段
的垂直平分线上;
(2)设五边形
的面积为
,写出
与
之间的函数表达式;
(3)连接
,当
为何值时,
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454328a8e75953fdb0835ce80d9566e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/48f7bed79b0af4e5de1dd0f45efbddd5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/1a669da5-05ff-4d95-befb-421c2cea1ea0.png?resizew=138)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)设五边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b782d0aa0681c55c66685a65c53f732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6763b4b9c2996c62342fb2c38a9ba06.png)
您最近一年使用:0次
9 . 已知:如图
是
的垂直平分线,
于点E,
,
求证:
.
![](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/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38d97f03faed3152db2fd3bd1919944.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761a77e11e1e45c2a8b2d34d22cf8e04.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/48219790-80ff-4d78-87ba-c3300e6494ae.png?resizew=159)
您最近一年使用:0次
10 . 如图,在矩形
中,
为
的中点,连接
并作
的垂直平分线交
于
,连接
并作
的垂直平分线交
于
,连接
.以
为圆心,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/b8ff7552-04c6-441d-8991-255fdfd8f98c.png?resizew=170)
(1)
与
有怎样的数量关系?答: ;
(2)证明(1)中的结论.
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/b8ff7552-04c6-441d-8991-255fdfd8f98c.png?resizew=170)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33120cf053b12b204b49d2affa917922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dc2d2dd56fcc67698c45a6e0e48f80.png)
(2)证明(1)中的结论.
您最近一年使用:0次