已知
是
的一条对角线.
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967133375102976/2970797072334848/STEM/d7d914f8-f4e3-4ed5-ac51-78247919e52c.png?resizew=285)
(1)求作矩形
,使得
,
两点都在直线
上;(要求:尺规作图,不写作法,保留作图痕迹)
(2)在(1)的条件下,若
,
,
,求矩形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967133375102976/2970797072334848/STEM/d7d914f8-f4e3-4ed5-ac51-78247919e52c.png?resizew=285)
(1)求作矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946c16d99496d31ce4d87301a4793393.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d69c69c46ac34f560546c22af120be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946c16d99496d31ce4d87301a4793393.png)
2022·福建三明·一模 查看更多[3]
更新时间:2022-05-02 16:45:01
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相似题推荐
解答题-作图题
|
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【推荐1】【概念学习】若两个等腰三角形有公共底边,则称这两个等腰三角形的顶角的顶点关于这条公共底边互为顶针点,这条公共底边叫做这两个互为顶针点的顶针线段,如图(1),四边形ABCD ,BC是一条对角线,AB=AC,DB=DC,则点A与点D关于顶针线段BC互为顶针点.
![](https://img.xkw.com/dksih/QBM/2022/2/28/2926316968738816/2928090537074688/STEM/742c259f-6d45-48be-bb43-d6fe59bd7854.png?resizew=453)
(1)【实践操作】如图(2),在长方形ABCD中,AB<AD.若在AD边上存在点F,边AB 上存在点E,使得点E与点C关于顶针线段BF互为顶针点,请用直尺和圆规在图2中作出满足条件的点F、E.(要求不写作法,保留作图痕迹.
(2)【思维探究】在上述的条件下,若AB=8,AD=10.请利用备用图求AE的长度.
![](https://img.xkw.com/dksih/QBM/2022/2/28/2926316968738816/2928090537074688/STEM/742c259f-6d45-48be-bb43-d6fe59bd7854.png?resizew=453)
(1)【实践操作】如图(2),在长方形ABCD中,AB<AD.若在AD边上存在点F,边AB 上存在点E,使得点E与点C关于顶针线段BF互为顶针点,请用直尺和圆规在图2中作出满足条件的点F、E.(要求不写作法,保留作图痕迹.
(2)【思维探究】在上述的条件下,若AB=8,AD=10.请利用备用图求AE的长度.
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解答题-作图题
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【推荐2】如图,
.
(1)用尺规作出
的角平分线
和线段
的垂直平分线
(不写作法,保留作图痕迹);
(2)按下面要求画出图形:
和
交于点D,
交
于点E,连接
并延长,交
于点F;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa8c0d6d7ae9e409db9b930b9e7489a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/27/856c22c1-ec2c-431e-985b-0a94a66deca8.png?resizew=223)
(1)用尺规作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
(2)按下面要求画出图形:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2924602e317f0d2451750565209f30e2.png)
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解答题-证明题
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【推荐1】如图,
是
的直径,弦
与直径
相交于点
,直线
是
的切线,点
在
外.
;
(2)若
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0513a30a20818b08dc6ea26e2c86492.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69d681e8ca47a4d2203f5dd788d0dd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93bc4c9dd737193f7acce692b23500d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
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解答题-问答题
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名校
【推荐2】如图,在矩形
中,
,
,点M是边
的中点,动点P从点A出发,沿折线
运动,在
上以每秒5个单位的速度运动,在
上以每秒4个单位的速度向终点D运动,连结
,Q是
的中点.点P的运动时间为
.
(1)用含t的代数式表示
的长;
(2)当点P在
上运动时,若
是直角三角形,求t的值;
(3)当
时,
取得最小值;
(4)当
与
的边平行或垂直时,直接写出t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b06e2afda07968ab42d3a812cfdbbb01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60756bccb922a9478647372f42cd9d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9065265448704d5613107f1c0633d430.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/21/0a697028-3465-4b1c-8388-f1ef64738f4c.png?resizew=155)
(1)用含t的代数式表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
(2)当点P在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2b58424e893df4e01c912f87e09095.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/263b2e141214b976e320f5d3034dd308.png)
(4)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
【推荐3】问题提出:
(1)如图1,在△ABC中,∠BAC=90°,AH⊥BC,垂足为点H,若AB=4,AC=3,则线段CH的长度为 .
问题探究:
(2)如图2,在四边形ABCD中,∠BAD=∠C=90°,AB=AD,点F为CD边的中点,点E是BC边上的一点,连接AE,AF,EF.若∠EAF=45°,BC=6,CD=2,求线段EF的长.
问题解决:
(3)如图3,在四边形ABCD中,AD
BC,AB=AD,∠ABC=60°,∠C=90°,点M,N是BC边上的两点,连接AM,AN,BD,BD交AM于点E,交AN于点F.若∠MAN=30°,BE=4,DF=6,求△AMN的面积.
(1)如图1,在△ABC中,∠BAC=90°,AH⊥BC,垂足为点H,若AB=4,AC=3,则线段CH的长度为 .
问题探究:
(2)如图2,在四边形ABCD中,∠BAD=∠C=90°,AB=AD,点F为CD边的中点,点E是BC边上的一点,连接AE,AF,EF.若∠EAF=45°,BC=6,CD=2,求线段EF的长.
问题解决:
(3)如图3,在四边形ABCD中,AD
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/2021/12/7/2867231854796800/2868659130318848/STEM/4f7f81cb-14ed-46b4-bd14-fede632a59ea.png?resizew=630)
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解答题-问答题
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【推荐1】如图,在矩形ABCD中,AB=8,BC=6.动点P、Q分别从点D、A同时出发向右运动,点P的运动速度为2个单位/秒,点Q的运动速度为1个单位/秒,当一个点到达终点时两个点都停止运动.设运动的时间为t(s)
(1)当t=2时,PQ的长为 ;
(2)若PQ=PB,求运动时间t的值;
(3)若BQ=PQ,求运动时间t的值.
(1)当t=2时,PQ的长为 ;
(2)若PQ=PB,求运动时间t的值;
(3)若BQ=PQ,求运动时间t的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/9eac86df-e7cd-4921-a098-6bd8e048f94e.png?resizew=145)
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解答题-证明题
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【推荐2】如图,矩形ABCD中,
,
,P为AD上一点,将
沿BP翻折至
,PE与CD相交于点O,且
,BE与CD交于点G.
![](https://img.xkw.com/dksih/QBM/2021/11/9/2847797092655104/2849143962771456/STEM/65fc7f644e994fd391394aff45740e0d.png?resizew=129)
(1)求证:
;
(2)求线段AP的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b1927db96d84f27197b5a654b622f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d48775f13f05443e6f6d30ae26e669f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3aa1da9eef031c9562154530cbafb33.png)
![](https://img.xkw.com/dksih/QBM/2021/11/9/2847797092655104/2849143962771456/STEM/65fc7f644e994fd391394aff45740e0d.png?resizew=129)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd374364dd4568e367b8735a2ee6b201.png)
(2)求线段AP的长.
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