如图,已知线段
和射线
,用不带刻度的直尺和圆规完成下列作图.(不写作法,保留作图痕迹)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/d5486ac3-a0da-47c4-afd1-482b196411a8.png?resizew=232)
(1)在图①中,在射线
上求作一点E,使得
;
(2)如图②,点P为
的内一个定点.请过点P作一条直线
,使得直线
分别和射线
交于点M、N,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/d5486ac3-a0da-47c4-afd1-482b196411a8.png?resizew=232)
(1)在图①中,在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c736dc94ef5ee0167220df6de8b874.png)
(2)如图②,点P为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78bfe4774b0926da92fd63dbb8e3d4a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae1210a744ae636419de68a525faf28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349e5b35d34c63909ae11aa7748233d7.png)
更新时间:2022-10-24 08:30:06
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图,
,
,请仅用无刻度的直尺按下列要求作图(保留作图痕迹).
的平分线;
(2)在图2中,分别在
,
上取点
,
,作
,
,使
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab41054fa9ce51b68e78d9c0cf398d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe80c5f1fc28ab4a39c2197406bcffa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a72dfbf0138a611174c36ce077e0c47.png)
(2)在图2中,分别在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7faabc484ce3666706c1beffda4bcfe2.png)
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解答题-作图题
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名校
【推荐2】如图,已知等边
中边
,按要求解答下列问题:
(1)尺规作图:作
的角平分线
,射线
交边
于点P.(不写作法,用
铅笔作图并保留痕迹)
(2)在(1)作图中,若点D在线段
上,且使得
,求
的长(结果保留根号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/bfa97cc6-8f48-4c84-8fc1-a830f7ecb81c.png?resizew=139)
(1)尺规作图:作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef5f3e1520c9a753b191dd4dfe35e389.png)
(2)在(1)作图中,若点D在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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解答题-作图题
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【推荐3】尺规作图之旅:如图
是一副纯手绘的画作,其中用到的主要工具就是直尺和圆规,在数学中,我们也能通过尺规作图创造出许多带有美感的图形.尺规作图起源于古希腊的数学课题,只允许使用圆规和直尺,来解决平面几何作图问题.
而这些尺规作图的背后都与我们学习的数学原理密切相关,下面是用尺规作一个角等于已知角的方法及说理,请补全过程.
已知:如图
,
,
使
.
作法:①如图,以
为圆心,以______为半径画弧,分别交
,
于点
,
;
②画一条射线
,以点
为圆心,以______长为半径画弧,交
于点
;
③以______为圆心,以______长为半径画弧,交前面的弧于点
,
④作射线
,
就是所求作的角.
(2)如图
,
,过点
画射线
,则
,
,
,
,
求证:
,
证明:
,
≌
.(______)
所以
.(______)
(3)请按照上面的范例,完成尺规作图:
①在图
中画出
的角平分线;
②在图
中直线上找到一点
,使它到点A,点
的距离相等.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
已知:如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e3d51307daa0cfab77eec9311d91bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27949b9eac364001ddbd7ec0ef2e0142.png)
作法:①如图,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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)
②画一条射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b48e33eaa40d01f976230d4b73ae91dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b48e33eaa40d01f976230d4b73ae91dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713877f832ddbfc9d52bd9902cda13b4.png)
③以______为圆心,以______长为半径画弧,交前面的弧于点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
④作射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6637859805b7b01f7a9a64771563406e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e3d51307daa0cfab77eec9311d91bf.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6637859805b7b01f7a9a64771563406e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27949b9eac364001ddbd7ec0ef2e0142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ec841221c64807bdb8ce6fbac6ed013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d1b5e4a70bb62763b35bb7cbd01912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063be481ae445e25b5b98fb3870efd16.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27949b9eac364001ddbd7ec0ef2e0142.png)
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c1198e889b163eb77140a0915196ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fca1a15b67c2375e838fa0937748e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2b4890319264aa23ad9b059d05b458.png)
所以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27949b9eac364001ddbd7ec0ef2e0142.png)
(3)请按照上面的范例,完成尺规作图:
①在图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
②在图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/26/23ad7ff3-c73e-4bcf-afdd-cbcd2c41e5de.jpg?resizew=136)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】如图,在矩形
中,
,
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/e610aaa2-19da-415a-a314-f58077b576d9.png?resizew=172)
(1)请用无刻度的直尺和圆规作线段AC的垂直平分线,使其分别与
,
,
交于点
(保留作图痕迹,不写作法)
(2)小明想用九年级三角形相似或三角函数的知识求线段
的长,请你帮他完成求解过程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6747441b260ca043446b5d472fece440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432043f79e122f291c47453013042704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/e610aaa2-19da-415a-a314-f58077b576d9.png?resizew=172)
(1)请用无刻度的直尺和圆规作线段AC的垂直平分线,使其分别与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab33dab2417f93f4317c4183c4be4ef.png)
(2)小明想用九年级三角形相似或三角函数的知识求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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解答题-作图题
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【推荐2】如图,在
中,
.
上求作一点
,使
,并连接
;(不写作法,保留作图痕迹)
(2)在(1)的条件下,当
,
时,
_____,
的周长为_____.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421456e82c859184328587723f85034d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(2)在(1)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191599d684f41efc62579911e29cbdf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524f25e1eedbfe399f7f42db890ab89a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147de24f071e316b68fd2e78e3c84545.png)
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解答题-作图题
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适中
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【推荐1】如图,在
的正方形网格中建立平面直角坐标系,
,
,
.
(1)直接写出
的形状为______;
(2)用无刻度的直尺作图;
①作
的角平分线CE交x轴于E点,写出E点的坐标______;
②在CE上存在一点D,使
,作出D点,并写出D点坐标______;
③直接写出CD长为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d009739b5b5362c7902eeeada94adb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f1f2b3e349a9be5fb156ae31525b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9205b92dbbac16ae84fc8810e80613f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6628d2484561aab16e1a4c02cf1df85f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/20/64b69450-3b26-4f24-bc66-1e0e2da8ba77.png?resizew=183)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)用无刻度的直尺作图;
①作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
②在CE上存在一点D,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff29971ccc633d89832ffa9bd54afa3.png)
③直接写出CD长为______.
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解答题-作图题
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【推荐2】先尺规作图,后进行计算:如图,△ABC中,∠A=105°.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/8cb1fc9c-a32f-4ae3-a788-e84d02c64116.png?resizew=206)
(1)试求作一点P,使得点P到B、C两点的距离相等,并且到∠ABC两边的距离相等(尺规作图,不写作法,保留作图痕迹).
(2)在(1)的条件下,若∠ACP=30°,求∠PBC的度数.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/8cb1fc9c-a32f-4ae3-a788-e84d02c64116.png?resizew=206)
(1)试求作一点P,使得点P到B、C两点的距离相等,并且到∠ABC两边的距离相等(尺规作图,不写作法,保留作图痕迹).
(2)在(1)的条件下,若∠ACP=30°,求∠PBC的度数.
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