如图
和
是相交于点O的两条公路,A、B是两个加油站,现准备在
的内部建一个油库,要求油库的位置点P既到A,B两个加油站的距离相等,又到两条公路
的距离相等,试用尺规作图作出点P的位置.(不写作法保留作图痕迹)
![](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/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://img.xkw.com/dksih/QBM/2021/3/30/2688972715335680/2689266810593280/STEM/5955c32e-4d08-407f-bea6-74c4757630e4.png)
20-21八年级上·浙江·期末 查看更多[1]
(已下线)【新东方】初中数学1174初二上
更新时间:2021-03-30 22:30:14
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相似题推荐
解答题-作图题
|
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【推荐1】如图,在
中,
,
.
(1)请用尺规作图法,作
的角平分线
交
于
(不要求写作法,保留作图痕迹);
(2)在(1)条件下,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58196842483577dbc6be9bc873651d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640e9e7c56e8eeda044fb55396088816.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/17/3e15efbd-36c2-4323-ae9c-beb7441fc99c.png?resizew=176)
(1)请用尺规作图法,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.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/8455657dde27aabe6adb7b188e031c11.png)
(2)在(1)条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ff1350bd72625328c85c3097cd85e.png)
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解答题-作图题
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名校
【推荐2】已知:如图
中,
.
求作:点P,使得点P在
上,且点P到
的距离等于
.
作法:
①以点B为圆心,以任意长为半径作弧,分别交射线
于点
;
②分别以点
为圆心,以大于
的长为半径作弧,两弧在
内部交于点F;
③作射线
交
于点P.则点P即为所求.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/2e34f5bf-ebe2-4299-b8ac-d3f62df42771.png?resizew=175)
(1)使用直尺和圆规,补全图形(保留作图痕迹);
(2)完成下面证明.
证明:连接
.
在
和
中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/309c842ad76cf77cd4be15ba736b21f5.png)
.
(_________________)(填推理的依据).
,点P在
上,
.
作
于点Q,
点P在
上,
__________(______________________)(填推理的依据).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9509d79235ae6a7dbcf2d3973d4ad880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
求作:点P,使得点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
作法:
①以点B为圆心,以任意长为半径作弧,分别交射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58e08ee0b2580a62cf20f709b5e90df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
②分别以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65026a6b6402cb599e14be8023a3f6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
③作射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/2e34f5bf-ebe2-4299-b8ac-d3f62df42771.png?resizew=175)
(1)使用直尺和圆规,补全图形(保留作图痕迹);
(2)完成下面证明.
证明:连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b26171c332b1bf23ed2e0217d006446.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e64c953aaf341e772a5fe776fbc78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/309c842ad76cf77cd4be15ba736b21f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9749de43d4126a6c405963d316088e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8f7a37d893711f3c415fed87f2eb2ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5ec6ae60e65b8e9e4535d7ed8824be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f9468a4f2ecbef2039bceed6ef6954.png)
作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84733f9dc908ceb11459cc2aed580ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709980626e94ca3c7cdc2cbbfe95061c.png)
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解答题-作图题
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【推荐1】(1)要在燃气管道m上建一个泵站P,分别向A,B两镇供气,泵站修在管道的什么地方可使所用输气管道最短?请在图中画出P点位置,保留作图痕迹,不用写作法.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/5cf1acb1-e4bc-468d-a30c-d96b94c5a4df.png?resizew=270)
(2)已知
,求作一点P,使P到
的两边的距离相等,且
.要求:尺规作图,并保留作图痕迹.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/5cf1acb1-e4bc-468d-a30c-d96b94c5a4df.png?resizew=270)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/53e3c9e2-995d-4580-957f-c67700f15aa8.png?resizew=134)
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解答题-作图题
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【推荐2】如图,某城市公园里有三个景点A、B、C,直线
表示直路,而
表示弯路.想在S区里修建一座公厕P,使它到两条路
的距离相等,且到两个景点B和C的距离也相等.求点P位置.
(用尺规作图,保留作图痕迹)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d960b1a059462dae47f6b47b355a8920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d960b1a059462dae47f6b47b355a8920.png)
(用尺规作图,保留作图痕迹)
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解答题-作图题
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【推荐1】已知:如图,
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/c8f91df2-2f67-4946-bbd8-1ad76842ec71.png?resizew=127)
(1)请画出
的外接圆
(尺规作图,不写作法,保留作图痕迹);
(2)连
,
,已知
,点M为
上异于点A,D,C的点,则
的度数为______
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/c8f91df2-2f67-4946-bbd8-1ad76842ec71.png?resizew=127)
(1)请画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)连
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a3eb9576531c4ca1077be7cb5ef14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b05146396b19ee8677c57423c7e9444a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e5dfc5e265bc948d843e26739e21fc.png)
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解答题-作图题
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【推荐2】如图,已知在
中,
.
边的垂直平分线;(保留作图痕迹,不写作法)
(2)
边的垂直平分线分别交
于点D、E,连接
,若
的周长是10,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f186ea827f7becafd1ac4955e22c6812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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