在数学课上,爱动脑筋的小孙同学提出了一个问题:已知
,求作一个以
为内角的菱形
经过课堂讨论,有的学习小组提出了如下尺规作图方案:
以点A为圆心,以适当长为半径画弧,与
,
分别交于
,
两点,再分别以
,
两点为圆心,以相同的长度为半径
画两条弧,两弧交于
内一点
;
以A,
为圆心,以大于
的长为半径作弧,两弧交于
,
两点;
连接
交
于点
,交
于点
,连接
,
.
请你根据上述尺规作图方案,完成下列问题:
(1)使用直尺和圆规补全图形;
保留作图痕迹![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(2)证明四边形
是菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af2ec59537d98c0aa3e0be6608ba74e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c93148adbc6e856da9a9d263f485d003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e415812cca9545611c0faa0c01b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c8034aef9ecb15c709331282b96eeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
请你根据上述尺规作图方案,完成下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/77c8184e-72e6-45aa-9ede-7e5747a69a57.png?resizew=136)
(1)使用直尺和圆规补全图形;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(2)证明四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
更新时间:2023-09-05 22:19:57
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】作图题:
(1)如图,已知
,用直尺和圆规作
,使得
,
,
,并在
和
中﹐作出
的平分线
和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be540d871aa835c930d83b4738156b2a.png)
的平分线
(不写作法﹐保留作图痕迹);
![](https://img.xkw.com/dksih/QBM/2021/2/4/2650959482175488/2662959805341696/STEM/dde0982f-08a7-4573-8a25-642e68b55bcf.png?resizew=204)
(2)根据(1)作出的图形说明
的理由﹔
(3)根据
,请用一句话归纳出一个结论.
(1)如图,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884e4bec1a5258d57d8084893d6989bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6265dc63709322c4d42cc213c17021c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63859903ae0680fb3e906ae6c0ab8a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee117a462f592abe52520f6badf00698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884e4bec1a5258d57d8084893d6989bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be540d871aa835c930d83b4738156b2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3557809c066e68395b614535a7675e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc19a633ae5d59707a1fb47b0beab441.png)
![](https://img.xkw.com/dksih/QBM/2021/2/4/2650959482175488/2662959805341696/STEM/dde0982f-08a7-4573-8a25-642e68b55bcf.png?resizew=204)
(2)根据(1)作出的图形说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f73da3cb02208df59879d2dac9108.png)
(3)根据
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace931ca12dacfbc896617cce6fab007.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,已知△ABC中,∠B=2∠A,点D在边AC上,且CD=CB.
(1)用尺规作图:在AB边上求作一点P ,使点P到CA,CB距离相等(保留作图痕迹,不要求写作法);
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878807761092608/2880113439105024/STEM/ee5c8ecf-09f1-415f-9822-a3073044e9f6.png?resizew=182)
(2)在(1)中, 线段BP与AD是否相等?说明理由.
(1)用尺规作图:在AB边上求作一点P ,使点P到CA,CB距离相等(保留作图痕迹,不要求写作法);
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878807761092608/2880113439105024/STEM/ee5c8ecf-09f1-415f-9822-a3073044e9f6.png?resizew=182)
(2)在(1)中, 线段BP与AD是否相等?说明理由.
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】阅读下面材料:
在数学课上,老师提出利用尺规作图完成下面问题:
已知:
是
的一个内角.
求作:
.
作法:①作线段
的垂直平分线
;
②作线段
的垂直平分线
,与直线
交于点O;
③以点O为圆心,
为半径作
的外接圆;
④在弧
上取一点P,连结
.
所以
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/de64c311-22e1-409b-9b96-2f5a55439b8d.png?resizew=133)
请回答:
(1)根据上述做法,利用尺规作图的方式,补全图形;
(2)∵线段
的垂直平分线
,线段
的垂直平分线
,与直线
交于点O,
∴
___________=___________,
∵
与
对
,
∴
(___________)(填写理由).
在数学课上,老师提出利用尺规作图完成下面问题:
已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
求作:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81be6e1b3a2d4b1e8283b1a6754f0296.png)
作法:①作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
②作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
③以点O为圆心,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
④在弧
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf468f5132e14ee1d8cc766808b11af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaebaf8ceed245eba896f36d8ff14b5.png)
所以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81be6e1b3a2d4b1e8283b1a6754f0296.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/de64c311-22e1-409b-9b96-2f5a55439b8d.png?resizew=133)
请回答:
(1)根据上述做法,利用尺规作图的方式,补全图形;
(2)∵线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a548e8a2e2205f2faa87e25180a083.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81be6e1b3a2d4b1e8283b1a6754f0296.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】(1)如图,D,C,F,B四点在一条直线上,
,
,
,垂足分别为点C,F,
.求证:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/14a1e4a1-184d-4790-8ab8-4e69ccbdaf82.png?resizew=199)
(2)如图,
垂直平分
交
于点D,交
于E,若
,
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c672f693a7e75a7bae4936dcb1920430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5d6e7ef3f341fd85acde9f60eaaff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/14a1e4a1-184d-4790-8ab8-4e69ccbdaf82.png?resizew=199)
(2)如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/24/43bae6b7-07f0-444a-9e7b-f46f0ba98201.png?resizew=180)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐3】如图,在四边形ABCD中,AB=
CD,DC
AB.连接DB,∠DBC=90°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/10/5abb1b91-1f79-491a-9038-f5b733e8f1e2.png?resizew=187)
(1)尺规作图:作线段BC的垂直平分线交CD于点E,交BC于点F,连接BE(不写作法,保留作图痕迹);
(2)在(1)所作图中,证明四边形ABED为菱形,完成下列填空.
证明:∵EF垂直平分BC
∴ .
∴∠EBC=∠C
∵∠DBC=90°
∴∠EBC+∠EBD=90°,∠C+∠EDB=90°
∴∠EBD=∠EDB
∴DE=BE
∴DE= .
即DE=
CD
∵AB=
CD
∴DE=AB
∵AB
DE
∴四边形ABED是 .
∵DE= .
∴四边形ABED为菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/10/5abb1b91-1f79-491a-9038-f5b733e8f1e2.png?resizew=187)
(1)尺规作图:作线段BC的垂直平分线交CD于点E,交BC于点F,连接BE(不写作法,保留作图痕迹);
(2)在(1)所作图中,证明四边形ABED为菱形,完成下列填空.
证明:∵EF垂直平分BC
∴ .
∴∠EBC=∠C
∵∠DBC=90°
∴∠EBC+∠EBD=90°,∠C+∠EDB=90°
∴∠EBD=∠EDB
∴DE=BE
∴DE= .
即DE=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
∵AB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
∴DE=AB
∵AB
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
∴四边形ABED是 .
∵DE= .
∴四边形ABED为菱形
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
真题
名校
【推荐2】如图,两条公路OA和OB相交于O点,在∠AOB的内部有工厂C和D,现要修建一个货站P,使货站P到两条公路OA、OB的距离相等,且到两工厂C、D的距离相等,用尺规作出货站P的位置.(要求:不写作法,保留作图痕迹,写出结论.)
![](https://img.xkw.com/dksih/QBM/2013/9/26/1573687133069312/1573687138959360/STEM/84f2737d-bc52-46e7-b437-1b6e05280b67.png?resizew=166)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在四边形
中,
,点O是四边形
内一点,连接
、
、
,
,
,
,求证:四边形
是菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62bcd06cdc84c599cff9c7354973b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c042ff18466e8165fadf343d142a4b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f6405550e89f89308de904441d5e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1061adfdf343b60b8a10e51f6db17699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb33c3b49c2c7bf2b9d3a360455db90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/25/ae99c431-e06f-4844-95a1-45bee0c775bb.png?resizew=117)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,D、E、F分别是
各边的中点,连接
、
、
.
(1)求证:四边形
为平行四边形;
(2)加上条件__________后,能使得四边形
为菱形.请从下面三个条件中选择1个条件填空(写序号),并加以证明.
①
;②
平分
;③
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/10/cfb3ce8f-fd55-42cc-a06f-70ea63f56ab2.png?resizew=144)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
(2)加上条件__________后,能使得四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
您最近一年使用:0次