作图题(用直尺和圆规作图),如图,已知线段AB和∠PAB.
![](https://img.xkw.com/dksih/QBM/2022/3/4/2929000879316992/2931955254321152/STEM/a4f32c2a04664a66b983dbd0bbd3e0f7.png?resizew=165)
(1)延长线段AB到点C,使得BC=AB.
(2)作∠PAB角平分线AM.
(3)在∠PAB内部作∠DBC,使得∠DBC=∠PAB,射线BD与AM相交于点D.
(4)联结CD,用量角器测得∠ADC的度数是______度.
(5)图中与∠ABD互补的角是______.
![](https://img.xkw.com/dksih/QBM/2022/3/4/2929000879316992/2931955254321152/STEM/a4f32c2a04664a66b983dbd0bbd3e0f7.png?resizew=165)
(1)延长线段AB到点C,使得BC=AB.
(2)作∠PAB角平分线AM.
(3)在∠PAB内部作∠DBC,使得∠DBC=∠PAB,射线BD与AM相交于点D.
(4)联结CD,用量角器测得∠ADC的度数是______度.
(5)图中与∠ABD互补的角是______.
更新时间:2022-03-08 19:41:08
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解答题-问答题
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适中
(0.65)
【推荐1】按要求解答
(1)①画直线AB;
②画射线CD
③连接AD、BC相交于点P
④连接BD并延长至点Q,使DQ=BD
![](https://img.xkw.com/dksih/QBM/2019/7/19/2249995844255744/2250993415766016/STEM/86fcc40edb03460eb6dde97883292d6f.png?resizew=109)
(2)已知一个角的补角比这个角的余角的3倍少50°,求这个角是多少度
(1)①画直线AB;
②画射线CD
③连接AD、BC相交于点P
④连接BD并延长至点Q,使DQ=BD
![](https://img.xkw.com/dksih/QBM/2019/7/19/2249995844255744/2250993415766016/STEM/86fcc40edb03460eb6dde97883292d6f.png?resizew=109)
(2)已知一个角的补角比这个角的余角的3倍少50°,求这个角是多少度
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解答题-作图题
|
适中
(0.65)
【推荐2】阅读:在用尺规作线段
等于线段
时,小明的具体做法如下:
已知:如图,线段
.![](https://img.xkw.com/dksih/QBM/2013/4/18/1573640300249088/1573640342323200/STEM/ac0adbf77c5644448390aad4cc8c325c.png?resizew=60)
求作:线段
,使得线段
.
作法: ① 作射线
;
② 在射线
上截取
.
∴线段
为所求.
![](https://img.xkw.com/dksih/QBM/2013/4/18/1573640300249088/1573640342323200/STEM/0d0d5e697d954b4fb6d814e8406055c1.png?resizew=158)
解决下列问题:
已知:如图,线段
.![](https://img.xkw.com/dksih/QBM/2013/4/18/1573640300249088/1573640342323200/STEM/c88fe65819f64d23a3ad893f9285b777.png?resizew=44)
(1)请你仿照小明的作法,在上图中的射线
上作线段
,使得
;(不要求写作法和结论,保留作图痕迹)
(2)在(1)的条件下,取
的中点
.若
,求线段
的长.(要求:第(2)问重新画图解答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
已知:如图,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://img.xkw.com/dksih/QBM/2013/4/18/1573640300249088/1573640342323200/STEM/ac0adbf77c5644448390aad4cc8c325c.png?resizew=60)
求作:线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
作法: ① 作射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
② 在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
∴线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2013/4/18/1573640300249088/1573640342323200/STEM/0d0d5e697d954b4fb6d814e8406055c1.png?resizew=158)
解决下列问题:
已知:如图,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://img.xkw.com/dksih/QBM/2013/4/18/1573640300249088/1573640342323200/STEM/c88fe65819f64d23a3ad893f9285b777.png?resizew=44)
(1)请你仿照小明的作法,在上图中的射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc490fd9c850622aa2beaf5d38d46459.png)
(2)在(1)的条件下,取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebaf7ab28003e358add1ab0476e80227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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解答题-问答题
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适中
(0.65)
【推荐1】如图,直线
与
相交于点
,
.
(1)如图
,若
平分
,求
的度数;
(2)如图
,若
,且
平分
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1309fbd835cf1a8b913d19f57b2b374.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/3/897cc386-04c0-495d-b982-efbe66eae7a8.png?resizew=347)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e7b8a59f8d66176463f3d71f882a26.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0726639a73f3e2dd64b17d9819719a21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e82995c1c26b468e2616ba0e66107eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2557547eecdc826b8282058802d217.png)
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解答题-问答题
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适中
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【推荐2】如图,三角尺
的直角顶点P在直线
上,点A,B在直线
的同侧.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/a6feb784-db1a-400f-bdb2-35e5313eb7b8.png?resizew=399)
(1)如图①,若
,求
的度数.
(2)如图②,若
平分
,
平分
,求
的度数.
(3)绕点P旋转三角尺
,使点A,B在直线
的异侧,如图③,当
时,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/a6feb784-db1a-400f-bdb2-35e5313eb7b8.png?resizew=399)
(1)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1259a08a666205cd08c53eb8d76287dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbf1667b21a273bf5dd007d65eeda7c.png)
(2)如图②,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbf1667b21a273bf5dd007d65eeda7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45a8a837c11c07073da3ff751d70278.png)
(3)绕点P旋转三角尺
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/581e74998dd2473f7aab03932d27f8f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0433f8116768b42642a7f7e5977ce6.png)
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解答题-作图题
|
适中
(0.65)
【推荐1】用直尺和圆规按下列要求作图:(不写作法,保留作图痕迹)
(1)作∠ABC的角平分线 (2)过点P作L的垂线
(1)作∠ABC的角平分线 (2)过点P作L的垂线
![](https://img.xkw.com/dksih/QBM/2017/10/9/1791711609823232/1792169784377345/STEM/629527a4412f48158c5d0e5236bec911.png?resizew=490)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】已知,如图,直角
中,
.
内画正方形
,使得点D在
上,E在
上,F、G在
上(尺规作图,不写画法,保留画图痕迹);
(2)若
,
,则(1)中所画的正方形的边长为___________.
(3)仅用无刻度的直尺在(1)的图中作一个三角形,使它的面积是
面积的一半,并把所作的三角形用阴影表示出来.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0763b031b7e6b6d87ce3554ac482d5.png)
(3)仅用无刻度的直尺在(1)的图中作一个三角形,使它的面积是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,在
中.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/f2e19a21-2060-4e31-9084-b72c5d257a62.png?resizew=152)
(1)作
的平分线
.
(2)作线段
的垂直平分线.(尺规作图,保留作图痕迹,不写作法)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/f2e19a21-2060-4e31-9084-b72c5d257a62.png?resizew=152)
(1)作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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解答题-作图题
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适中
(0.65)
【推荐2】按要求完成下列作图,不要求写作法,只保留作图痕迹.
(1)已知:线段AB,作出线段AB的垂直平分线MN.
(2)已知:∠AOB,作出∠AOB的平分线OC.
(3)已知:线段a和b,求作:等腰三角形,使等腰三角形的底边长为a,底边上的高的长为b.
(1)已知:线段AB,作出线段AB的垂直平分线MN.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/29/124b8792-c168-4909-bd86-4ac8d81aeca9.png?resizew=178)
(2)已知:∠AOB,作出∠AOB的平分线OC.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/29/d15257b7-1358-48d6-8c04-9a139ead8439.png?resizew=150)
(3)已知:线段a和b,求作:等腰三角形,使等腰三角形的底边长为a,底边上的高的长为b.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/29/27ce2204-a409-4daa-a5ba-d34078da990f.png?resizew=102)
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