如图,电信部门要修建一座电视信号发射塔,按照设计要求,发射塔在
内,到两个城镇M,N的距离相等,且到两条公路
和
的距离也相等,发射塔P应修建在什么位置?请用尺规作图标出它的位置.(作图不写作法,但要求保留作图痕迹.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/9e70c426-7d26-4761-abf0-1b069b5ffbd1.png?resizew=201)
更新时间:2024-01-16 09:55:04
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】
为
角平分线上的一点,
和
分别在
和
上,且
,
,试探究
与
的关系,并给予证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374e2198b495b86b0f8308d28035a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a55b6ce55e67f6e95e616eaf1ca3f6f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a34228c2e9340b225b7281383b24d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3acb6b5359a901c5b5a71f32f7f6ca32.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/ece7f4d3-1f77-4c96-8630-23650dc34107.png?resizew=184)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在Rt△ABC中,∠C=90°,AC=8,BC=6,D、E分别是AB和BC上的点.把△ABC沿着直线DE折叠,顶点B对应点是点B′
(1)如图1,点B′恰好落在线段AC的中点处,求CE的长;
(2)如图2,点B′落在线段AC上,当BD=BE时,求B′C的长;
(3)如图3,E是BC的中点,直接写出AB′的最小值.
(1)如图1,点B′恰好落在线段AC的中点处,求CE的长;
(2)如图2,点B′落在线段AC上,当BD=BE时,求B′C的长;
(3)如图3,E是BC的中点,直接写出AB′的最小值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/c73fdffe-8a0b-4598-9a79-aac7030c8bf4.png?resizew=444)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】如图,已知△ABC.
![](https://img.xkw.com/dksih/QBM/2018/12/12/2095329247608832/2096818037858304/STEM/51c4f72ffa0947c6aea4c1c1a0be7d37.png?resizew=138)
(1)画出△ABC的高AD;
(2)尺规作出△ABC的角平分线BE(要求保留作图痕迹,不用证明).
![](https://img.xkw.com/dksih/QBM/2018/12/12/2095329247608832/2096818037858304/STEM/51c4f72ffa0947c6aea4c1c1a0be7d37.png?resizew=138)
(1)画出△ABC的高AD;
(2)尺规作出△ABC的角平分线BE(要求保留作图痕迹,不用证明).
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐2】如图,已知点D为OB上的一点,请用直尺和圆规按下列要求进行作图,保留作图痕迹.
(1)作∠AOB的平分线OC;
(2)在OC上取一点P,使得OP=a ;
(3)爱动脑筋的小刚经过仔细观察后,进行如下操作:在边OA上取一点E,使
得PE=PD,这时他发现∠OEP与∠ODP之间存在一定的数量关系,请写出∠OEP
与∠ODP的数量关系,并说明理由.
(1)作∠AOB的平分线OC;
(2)在OC上取一点P,使得OP=a ;
(3)爱动脑筋的小刚经过仔细观察后,进行如下操作:在边OA上取一点E,使
得PE=PD,这时他发现∠OEP与∠ODP之间存在一定的数量关系,请写出∠OEP
与∠ODP的数量关系,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/09ed0761-e958-4855-834e-aaf69605f481.png?resizew=231)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】为筹办一个大型运动会,某市政府打算修建一个大型体育中心.在选址过程中,有人建议该体育中心所在位置应与该市的三个城镇中心(图中以P,Q,R表示)的距离相等.
![](https://img.xkw.com/dksih/QBM/2021/10/20/2833513038004224/2841976787058688/STEM/7b7983249c65426ba0632beee4e0bf2f.png?resizew=321)
(1)根据上述建议,试在图(1)中画出体育中心G的位置;
(2)如果这三个城镇的位置如图(2)所示,
是一个钝角,那么根据上述建议,体育中心G应在什么位置?
(3)你对上述建议有何评论?你对选址有什么建议?
![](https://img.xkw.com/dksih/QBM/2021/10/20/2833513038004224/2841976787058688/STEM/7b7983249c65426ba0632beee4e0bf2f.png?resizew=321)
(1)根据上述建议,试在图(1)中画出体育中心G的位置;
(2)如果这三个城镇的位置如图(2)所示,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/415b93716842c006f6ec735879f0e2c9.png)
(3)你对上述建议有何评论?你对选址有什么建议?
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,
中,
,直线
垂直平分
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/77cc7133-7907-4472-affb-b89f8eb160e7.png?resizew=223)
(1)在直线
上求一点
,使点
到
,
的距离相等(尺规作图,不写作法,保留作图痕迹);
(2)在(1)的条件下,连接
,若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d5ce86dca42eb3f3a98f9efa0a8f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/77cc7133-7907-4472-affb-b89f8eb160e7.png?resizew=223)
(1)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)在(1)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbcd5e9028eb72b9b030aa2d57565b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d9cc98e6df306063e645044f0faa7d.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】如图,
是
的直径,
是
的切线,
交
于点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/9df22ca7-88e8-48e6-aab1-076743b76be0.png?resizew=321)
(1)如图1,用无刻度的直尺和圆规在
边上作点D,使
;(保留作图痕迹,不写作法)
(2)如图2,在(1)的条件下,若
,求阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0101a7b5c8a4aed0de2af363792e39a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/9df22ca7-88e8-48e6-aab1-076743b76be0.png?resizew=321)
(1)如图1,用无刻度的直尺和圆规在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbe9dd3265b723b10542b8c1663acdf.png)
(2)如图2,在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddfbdaed57e8106a75a3ff729b4d0759.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐2】如图,
的对角线
,
交于点O,
、
于点E、F(不写作法,保留作图痕迹)
(2)在(1)问的条件下,连接
,
,求证:四边形
为菱形
并将下面的证明过程补充完整
证明:∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce98f3265faf997b6ace68fb5f324c03.png)
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4738132e10d0dfad2e3d82e18a1765e6.png)
∴___________①___________
∴![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e297f020e0bdb3ddb74bff82cb6851c0.png)
在
和
中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb57dbaa354d8ba60453d8e498875d9.png)
,
∴___________③___________
∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4738132e10d0dfad2e3d82e18a1765e6.png)
∴四边形
为平行四边形
∵___________④___________
∴四边形
为菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e23b0785ba400d61178bddd714f61a0.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/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
(2)在(1)问的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e41003131c669f518bc8485620486fa.png)
并将下面的证明过程补充完整
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce98f3265faf997b6ace68fb5f324c03.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4738132e10d0dfad2e3d82e18a1765e6.png)
∴___________①___________
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e297f020e0bdb3ddb74bff82cb6851c0.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29358d80736030cb71f552eadad6218d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c61fdac9759d69f305e7a7ad04c712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb57dbaa354d8ba60453d8e498875d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acabd4659457ddee7a3f81fc7c2cc97.png)
∴___________③___________
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4738132e10d0dfad2e3d82e18a1765e6.png)
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e41003131c669f518bc8485620486fa.png)
∵___________④___________
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e41003131c669f518bc8485620486fa.png)
您最近一年使用:0次