1 . 如图,
的周长为30,
,作
边的垂直平分线
分别交
,
于点
.连接
,若点
是直线
上的一个动点,则
周长的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a949bde51502632e78a278eea68d780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.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/b92dbe7d01d47d6c2db1396180caf76d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace5e8c3769ad8f370c86f879246c174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40c49d6e2fc6fbdc21ff61841b586a6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/1af6a03b-bc4c-44e6-921b-0f8cdd802d13.png?resizew=153)
您最近一年使用:0次
2 . 在平面直角坐标系中,平行四边形
的边
在
轴上,顶点
,对角线
相交于点
、分别以点
为圆心,以大于
长为半径画弧,两弧交于点
,连接
交
于点
,则点
的横坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22542f1877b226e83d6e099b9beff134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3314abcc3dc248c7b8b84c1310b854db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b2e6a596589a074a2cb60d95617152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909a84c5f1e6ceea48418209d17c3a11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/8add96bd-a081-4929-8822-2a42d93ab647.png?resizew=140)
您最近一年使用:0次
3 . 如图,在
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/f1ba1365-9e32-4082-a955-aab32f4e3dc9.jpg?resizew=96)
(1)利用直尺和圆规完成如下操作(保留作图痕迹):
作
的平分线
交
于点
;作边
的垂直平分线
与
相交于点
;连接
;
(2)请你观察图形,猜想线段
之间的数量关系并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa90db29dc0badb8a25921f9710f6b8f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/f1ba1365-9e32-4082-a955-aab32f4e3dc9.jpg?resizew=96)
(1)利用直尺和圆规完成如下操作(保留作图痕迹):
作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01f2c492699e35cdb5242d1cff55f39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c3cc1f331dbb2248b0829039df7f3.png)
(2)请你观察图形,猜想线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bb1063e139610045f3bca5ca0b2766.png)
您最近一年使用:0次
4 . 已知
在网格中的位置如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/64445b1e-7236-4415-8896-01142d93e889.png?resizew=240)
(1)作出
关于
轴对称的
,并写出
三个顶点的坐标.
(2)在
轴上画出点
,使
最小.(保留作图痕迹)
(3)在
轴上找一点
,使
.(保留作图痕迹)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/64445b1e-7236-4415-8896-01142d93e889.png?resizew=240)
(1)作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51a8d10345f567e0f2daf18529d42f0.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d344c4876db606024d81e6de01fe06.png)
您最近一年使用:0次
5 . 如图,在
中,
,
,D是
上一点.
垂直平分
,交
于E,且
,求
的长;
(2)如图2,连接
,若
平分
,且
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0566be94b1ed3e5d250ca530eeb529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafd21730b3a22d6b078eeb1a18bc468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de8cc6e1c3812fcffb74620e96f4eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
6 . 如图,在
中,
是
边上的中线,在
边取一点
,使得
.作
的垂直平分线
交
于
,交
于
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/db5240e6-fb7a-49f4-af7a-ffb37ff4dfdc.png?resizew=303)
(1)求证:
是等边三角形;
(2)若
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10020fcf3182949e9fac393467cceb2.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ac49caae8e3b8869d19beeff98966e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/db5240e6-fb7a-49f4-af7a-ffb37ff4dfdc.png?resizew=303)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
您最近一年使用:0次
7 . 如图,已知
中,
,
,
,
、
是
边上的两个动点,其中点
从点
开始沿
方向运动,且速度为每秒
,运动至点
停止;点
从点
开始沿
方向运动,且速度为每秒
,它们同时出发,同时停止,设出发的时间为
秒.
![](https://img.xkw.com/dksih/QBM/2024/2/21/3437748520484864/3446341166440448/STEM/e06622ab90154bab93b956484b9ca6f6.png?resizew=211)
(1)当
秒时,求
的长;
(2)当点
在边
上运动时,求出发时间为几秒时,
是等腰三角形?
(3)t为何值时,点P在
的垂直平分线上(按不同的情况画出图形,并解答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f36072b3b677715eb9e6420e834c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/559430b68a8ff1e7b21df565530966c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/db7cd08caa03d0b13b0b99292884d9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67f966f8f6705ca3a8916959386eaab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7012d1ff11db5e150182e19646814cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a11e8c4c6bfbf140ee21f99c0b5e6c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/2024/2/21/3437748520484864/3446341166440448/STEM/e06622ab90154bab93b956484b9ca6f6.png?resizew=211)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbeede118c407a800b05757b9a1393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7a551505ae42b49904bab59b17012d8.png)
(3)t为何值时,点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
8 . 如图,
中
,面积是24,
垂直平分
,分别交
于
,
点.若点
为
边的中点,点
为线段
上一动点,则
周长的最小值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/2bcd2ee7-58be-4ba6-8a5e-f6634c7f73f6.png?resizew=179)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acac491282022cf71390ce733e965957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/26e59b7c0d4a0b312e674b7bb061240b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/2bcd2ee7-58be-4ba6-8a5e-f6634c7f73f6.png?resizew=179)
A.10 | B.11 | C.12 | D.13 |
您最近一年使用:0次
9 . 如图,在锐角
中,
,
和
分别垂直平分边
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/871ecd5c-6f78-422a-82a4-a26812d5c371.png?resizew=168)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e702e136211878dce558e0457f15df63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d54431bbb28ebd98db5c1dc6083a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e142544a6d4e6851096afbd3cbad2fe2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/871ecd5c-6f78-422a-82a4-a26812d5c371.png?resizew=168)
A.![]() | B.![]() | C.![]() | D.不能确定 |
您最近一年使用:0次
10 . 如图,在直角坐标系中,先描出点
,点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/2ee673ca-f435-4469-8e81-2d6376313483.png?resizew=186)
(1)描出点 A 关于 x 轴的对称点
的位置,写出
的坐标 ;
(2)用尺规在x 轴上找一点 P ,使
(保留作图痕迹);
(3)用尺规在 x 轴上找一点 C ,使
的值最小(保留作图痕迹)
(4)求
的面积(写出计算过程).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5553b1fd24d3acba9ba8bd46c4e47dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c4991234d75c78d8d5e758ddd51978.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/2ee673ca-f435-4469-8e81-2d6376313483.png?resizew=186)
(1)描出点 A 关于 x 轴的对称点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(2)用尺规在x 轴上找一点 P ,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
(3)用尺规在 x 轴上找一点 C ,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab15f71acf24a48b4ea4efac5f09b718.png)
(4)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
您最近一年使用:0次