1 . 如图,已知点
是
内任意一点,点
、
关于
对称,点
、
关于
对称,连接
,分别交
,
于
,
,连接
,
.若
,则
的周长是________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dcf6d28b1366e284f056589d964c9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
您最近一年使用:0次
2 . 如图,
中,
, 点
是边
上一点,在边
上各找一点
,当
周长最短时,
的度数是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c157441734cc2f1853bb3e15b631a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675a92cad72c65aa4071b9d9e226090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de0022a7f2e122492f1483e4d3cccba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45a8a837c11c07073da3ff751d70278.png)
您最近一年使用:0次
3 . 如图所示,
三个顶点的坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/8fc5685e-df82-4cd5-a7d9-ea23a1bf60ea.png?resizew=218)
(1)在图中画出
关于y轴对称的图形
;
(2)在y轴上画出点Q,使
最小,则点Q的坐标是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c981c1457633674b3a7b58d211032256.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcb0a50da34827302908cd0fc1737a8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee143cfbef1de08cfb5f9055c2dff4d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/8fc5685e-df82-4cd5-a7d9-ea23a1bf60ea.png?resizew=218)
(1)在图中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(2)在y轴上画出点Q,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2339b7b98c47b4a339030dc2dbd5c5c3.png)
您最近一年使用:0次
2024-01-16更新
|
58次组卷
|
2卷引用:内蒙古自治区呼和浩特市新城区第十九中学2023-2024学年八年级上学期期中数学试题
4 . 下列命题中:(1)两个顶角对应相等的等腰三角形是全等形;(2)三角形的外角大于该三角形任意一内角;(3)轴对称图形的对称轴,是任何一对对应点所连线段的垂直平分线;(4)三角形的三条角平分线交于一点,这一点到三角形三边的距离相等.真命题的个数有( )
A.3个 | B.2个 | C.1个 | D.0个 |
您最近一年使用:0次
5 . 如图的直线是篮球场地的边线,两个篮球队员在教练指导下在场地内练习传球,A、B是两名队员所在位置.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/8951fcbb-28e8-4341-8048-ecbe8a15b230.png?resizew=362)
(1)当教练员站在边线的哪个位置时,到两名队员的距离相等?用尺规作图(不写作法)在图(1)中标示出来;
(2)当教练员站在边线的哪个位置时,到两名队员的距离和最小?用尺规作图(不写作法)在图(2)中标示出来;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/8951fcbb-28e8-4341-8048-ecbe8a15b230.png?resizew=362)
(1)当教练员站在边线的哪个位置时,到两名队员的距离相等?用尺规作图(不写作法)在图(1)中标示出来;
(2)当教练员站在边线的哪个位置时,到两名队员的距离和最小?用尺规作图(不写作法)在图(2)中标示出来;
您最近一年使用:0次
6 . 如图,抛物线
经过点
,点
,与y轴交于点C,抛物线的顶点为D.
(1)求抛物线的解析式;
(2)求
的面积;
(3)请在抛物线的对称轴上找一点M,使
的值最小,请直接写出M点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be4715dd5f2139c84d0302095d226302.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/22/630de8a9-1638-448a-b9e2-e5b70c6ca55d.png?resizew=106)
(1)求抛物线的解析式;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)请在抛物线的对称轴上找一点M,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd50f7b773530824a9b69a1d57073f0.png)
您最近一年使用:0次
名校
7 . 如图,
内一点P,
、
分别是点P关于
、
的对称点,
交
于点M,交
于点N,若
,则
的周长是______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](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/a4a949c00526fddf435423272cf10f25.png)
![](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/63d7660d2dbe87c7cf5f9a38d20fa64f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/20/145924b5-027d-4b4b-bcf7-dcd9d5c21f0e.png?resizew=166)
您最近一年使用:0次
2023-10-13更新
|
213次组卷
|
2卷引用:内蒙古自治区内蒙古师范大学附属中学2023-2024学年八年级上学期期中数学试题
名校
8 . 如图,
,点
是
上一点,点
与点
关于
对称,
于点
,若
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ad2d2af62b9ff9322e6d2ab818290d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1d14a5f2afbadb641a21d6cb246ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74879f58bcb0775715da84e6a1b7397b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
您最近一年使用:0次
2023-01-05更新
|
201次组卷
|
4卷引用:内蒙古自治区呼和浩特市第四中学2023-2024学年八年级上学期期中数学试题
9 . 如图,矩形ABCD中,AB=6,BC=12,E为CD边的中点,点P、Q为BC边上两个动点,且PQ=6,当四边形APQE的周长最小时,BP=_____ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/5/5268d4d7-15b1-4779-9405-e0b3f2e52889.png?resizew=147)
您最近一年使用:0次
2022-08-01更新
|
191次组卷
|
2卷引用:内蒙古自治区通辽市霍林郭勒市第五中学2022-2023学年九年级下学期3月月考数学试题
名校
10 . △ABC在平面直角坐标系中的位置如图所示(每个小正方形的边长为1).
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898552282775552/2899164459524096/STEM/000800f1-ee12-4298-ab8c-767439dd0833.png?resizew=238)
(1)作出△ABC关于y轴对称的△A1B1C1;
(2)直接写出点C1的坐标;
(3)若P(a,a-1)是△ABC内部一点,点P关于y轴对称点为P',且PP’=6,求点P'的坐标.
![](https://img.xkw.com/dksih/QBM/2022/1/20/2898552282775552/2899164459524096/STEM/000800f1-ee12-4298-ab8c-767439dd0833.png?resizew=238)
(1)作出△ABC关于y轴对称的△A1B1C1;
(2)直接写出点C1的坐标;
(3)若P(a,a-1)是△ABC内部一点,点P关于y轴对称点为P',且PP’=6,求点P'的坐标.
您最近一年使用:0次
2022-01-21更新
|
330次组卷
|
6卷引用:内蒙古自治区呼和浩特市赛罕区第三十六中学2023-2024学年八年级上学期期中数学试题