如图,按下列要求作图:
(1)作出△ABC的角平分线CD;
(2)作出△ABC的中线BE;
(3)作出△ABC的高AF.
(1)作出△ABC的角平分线CD;
(2)作出△ABC的中线BE;
(3)作出△ABC的高AF.
![](https://img.xkw.com/dksih/QBM/2021/11/30/2862674989572096/2874543356428288/STEM/4c3daed6-1101-46f2-9f67-95d81e5f26a5.png?resizew=226)
更新时间:2021-12-17 16:56:20
|
相似题推荐
解答题-作图题
|
容易
(0.94)
【推荐1】下面是小华设计的“作三角形一边上的高”的尺规作图过程.
已知:△ABC,求作:△ABC的边BC上的高AD.
作法:
①以点A为圆心,适当长为半径画弧,交直线BC于点M,N;
②分别以点M,N为圆心,以大于
MN的长为半径画弧,两弧相交于点P;
③作直线AP交BC于点D,则线段AD即为所求△ABC的边BC上的高.
根据小华设计的尺规作图过程:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/12/0f0d0206-fde4-4601-8a8d-ff2d00b6a0b1.png?resizew=367)
(1)AP是线段MN的 ;
(2)证明AD是△ABC的高.
已知:△ABC,求作:△ABC的边BC上的高AD.
作法:
①以点A为圆心,适当长为半径画弧,交直线BC于点M,N;
②分别以点M,N为圆心,以大于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
③作直线AP交BC于点D,则线段AD即为所求△ABC的边BC上的高.
根据小华设计的尺规作图过程:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/12/0f0d0206-fde4-4601-8a8d-ff2d00b6a0b1.png?resizew=367)
(1)AP是线段MN的 ;
(2)证明AD是△ABC的高.
您最近一年使用:0次
解答题-作图题
|
容易
(0.94)
【推荐2】图①、图②、图③均是5×5的正方形网格,每个小正方形的顶点称为格点,每个小正方形的边长均为1,点A、B、C均在格点上.在图①、图②、图③中,只用无刻度的直尺,在给定的网格中按要求画图,不要求写出画法,保留作图痕迹.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/addc1df5-4c6e-4603-9c5e-63bcf038224b.png?resizew=358)
(1)在图①中,画△ABC的高线AD.
(2)在图②中,画△ABC的中线BE.
(3)在图③中,画△ABF,使△ABF的面积为6
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/addc1df5-4c6e-4603-9c5e-63bcf038224b.png?resizew=358)
(1)在图①中,画△ABC的高线AD.
(2)在图②中,画△ABC的中线BE.
(3)在图③中,画△ABF,使△ABF的面积为6
您最近一年使用:0次
解答题-作图题
|
容易
(0.94)
【推荐1】如图,Rt△ABC中,∠C=90°,∠A=60°,AB=4.
![](https://img.xkw.com/dksih/QBM/2012/1/13/1573329078452224/1573329130635264/STEM/0f10b254d13845459a60a0be9f597822.png?resizew=112)
1. 用尺规作∠BAC的平分线AP,交BC于点F(保留作图痕迹,不写作法与证明)
2. 求AF的长
![](https://img.xkw.com/dksih/QBM/2012/1/13/1573329078452224/1573329130635264/STEM/0f10b254d13845459a60a0be9f597822.png?resizew=112)
1. 用尺规作∠BAC的平分线AP,交BC于点F(保留作图痕迹,不写作法与证明)
2. 求AF的长
您最近一年使用:0次
解答题-问答题
|
容易
(0.94)
【推荐2】已知
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/8/c2c2773e-cd7c-4557-b093-b78e6c23e298.png?resizew=121)
(1)用直尺和圆规作一点
,使点
到
的两边距离相等,且到点
,
的距离也相等;
(2)在(1)的条件下,连结
,
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8793053fbb2ac5a3122b092a575124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640e9e7c56e8eeda044fb55396088816.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/8/c2c2773e-cd7c-4557-b093-b78e6c23e298.png?resizew=121)
(1)用直尺和圆规作一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)在(1)的条件下,连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fc1df99f9a3c9e22d2041a89e2880f.png)
您最近一年使用:0次
解答题-作图题
|
容易
(0.94)
【推荐1】已知:在
中,
.求作:
内部的一点P,使得点P到
的距离等于到
的距离,且点P在
边的高线上.请用直尺、圆规作图,不写作法,但要保留作图痕迹.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca187808a3b99273fb88560fc63ee278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/a55bf5d8-ba36-4fcd-9d25-35ad283481fe.png?resizew=206)
您最近一年使用:0次
解答题-作图题
|
容易
(0.94)
名校
【推荐2】如图,已知
中,
,
.请用尺规作图法,在
上找一点
,使得
.(保留作图痕迹,不写作法)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6e4a2df58a236c20df5df0d29a466c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ba2098ed6b4137b08932524b72ba37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fe532cad7a1f9279d58874aa4def00.png)
您最近一年使用:0次