如图,已知线段
,
和
,按要求尺规作图(不必写作法,保留作图痕迹).
(1)求作
,使
,
,
;
(2)填空:(1)中作出的三角形__________(填“是”或“不是”)唯一的,作图依据是__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/6/9fcfd6ce-5596-4f44-be13-b5b63d9be92b.png?resizew=256)
(1)求作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aada537209e8ab7626e42b17f68907b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e781a2489271bfd1597cba1bb6f5887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e977f2c2745b85a7dc003a482cdd9299.png)
(2)填空:(1)中作出的三角形__________(填“是”或“不是”)唯一的,作图依据是__________.
更新时间:2023-07-28 23:19:27
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】如图,在同一平面内有三个点
与直线
,根据下列语句按要求作图:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/15/76289cb5-f171-4159-965e-8a64d3c1530b.png?resizew=247)
(1)作射线
;
(2)作线段
;
(3)用圆规在线段
的延长线上截取
;
(4)在直线
上找到一个点
,使得
最小,理由是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/15/76289cb5-f171-4159-965e-8a64d3c1530b.png?resizew=247)
(1)作射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)用圆规在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a1bf64ba772922fe58b5322eb4bced.png)
(4)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/e538ecb0f77fb4ac984f70241f5c3bf3.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,在
中,
,点
是
的中点,过点
作
于点
,延长
到点
,使得
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/6/27c8f859-085f-4b7b-92f3-7fe5b0ebd9f1.png?resizew=156)
(1)根据题意,补全图形:
(2)求证:四边形
是菱形;
(3)若
,
,求菱形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9a9618018d717926540d1452f76e44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/6/27c8f859-085f-4b7b-92f3-7fe5b0ebd9f1.png?resizew=156)
(1)根据题意,补全图形:
(2)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a5a2949b3d520ed03d57126c7d4d8d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a5a2949b3d520ed03d57126c7d4d8d.png)
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,已知线段a、b和
,用尺规作一个三角形
,使
.(要求:不写已知、求作、作法、只画图,保留作图痕迹)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780d8fd6c6c1deeeb45e15f639719e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e38c078cd729ea5cf0e23faecd0d02ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/23/8ba3a155-6aad-4eee-8aba-8f1543ad8995.png?resizew=152)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,已知线段a,c(a<c),直角α,用尺规作图法求作Rt△ABC,使∠C=∠α,BC=a,AB=c.(保留作图痕迹,不写作法)
![](https://img.xkw.com/dksih/QBM/2020/8/16/2528805200347136/2531110609952768/STEM/b541f29640b24293a6e8536ec612fde3.png?resizew=284)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】如图,点
是等边
内一点,
,
.以
为一边作等边三角形
,连接
.
(1)若
,求
的值;
(2)当
时,试判断
的形状,并说明理由;
(3)探究:当
为多少度时,
是等腰三角形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dfe2fb542275d26a65d703084557a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbec8352ce3dbfbf3b173045d0ba8f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3201d3796ed9a29338aac25245a7c8e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c7b939523661ac5727cbd1651d2b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae35c644141e229ffbd649b69fc9847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372629a8666de1e9bac3e7daadcac7b6.png)
(3)探究:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372629a8666de1e9bac3e7daadcac7b6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/8a4a5336-f68d-4a38-a6f2-8edfcc6f9a77.png?resizew=125)
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解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,AB=AC,AD=AE,∠BAC=∠DAE.
(1)求证:△ABD≌△ACE;
(2)若∠1=25°,∠2=30°,求∠3的度数.
(1)求证:△ABD≌△ACE;
(2)若∠1=25°,∠2=30°,求∠3的度数.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/16/0e551b0b-e09c-4bd4-b093-aa69c2de46b5.png?resizew=163)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐1】尺规作图(不写作法,保留作图痕迹)
(1)在图1中,以射线
为边,请用尺规作图在射线
上方作
;
(2)在图2中,请用尺规作图作
点关于直线
的对称点
;
(3)解决实际问题:如图3,不平行的公路
,
(均为直线)分别经过
两个加油站,现准备建一个油库,要求油库的位置点
满足到
两个加油站的距离相等,而且点
到两条公路
,
的距离也相等,请用尺规作图作出点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/cf661dea-eef0-49ee-bc67-f9788d7da341.png?resizew=550)
(1)在图1中,以射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc33578e63c1d524857b84a290fa71c0.png)
(2)在图2中,请用尺规作图作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
(3)解决实际问题:如图3,不平行的公路
![](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/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】尺规作图:已知∠α,
求作:∠A使∠A=∠α( 不写作法,保留痕迹 )
求作:∠A使∠A=∠α( 不写作法,保留痕迹 )
![](https://img.xkw.com/dksih/QBM/2018/9/14/2032203407990784/2034837762678784/STEM/0cb20c4ce6e34c8d8c2defe4e3be9d1f.png?resizew=92)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐3】如图,在平行四边形
中,
,点E是线段
上的一点,连接
.
上求作一点F,使得
(要求:尺规作图,不写作法,保留作图痕迹);
(2)在(1)所作的图中,证明:四边形
为平行四边形的结论(请补全下面的证明过程,将答案写在答题卡对应的番号后,不写证明理由).
解:(2)证明:在平行四边形
中,
∵
,
∴_________________,
∴四边形
是矩形,
∴
,
,
,
在
和
,
,
∴
,
∴_____________,
,
∴
,
∴_____________,
∴四边形
为平行四边形(两边分别相等的四边形为平行四边形).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2fc51de957401a6193689497e6014d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115abfd93e351177fcb914b01746a0c1.png)
(2)在(1)所作的图中,证明:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
解:(2)证明:在平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2fc51de957401a6193689497e6014d.png)
∴_________________,
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1393308bc68322f50fa29702dd412263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d2530e7023b2345c651e8f53629ff1.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1df5eef344966877c4f7e49a018a1180.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b3bfd79517903007e3854b3976bcbc.png)
∴_____________,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe5e99b05b12867d0eb144bc7dd90f8.png)
∴_____________,
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87e1fe20bb0e8292e993657e14bc79a.png)
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