19-20八年级下·浙江杭州·阶段练习
解题方法
1 . 如图,在平面直角坐标系中,一次函数
的图象与反比例函数
的图象相交于点
,点A的坐标为
,点B的横坐标为6.
(1)求反比例函数与一次函数的解析式;
(2)连结
,求
的面积;
(3)若点C在x轴上,D点在坐标平面内,是否存在点C,使得以
为顶点的四边形是矩形,若存在,求出点D的坐标;求出点的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed06ccefffc165f9c77250cd28301d8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc4622a5f65ffbece28e09206b0cb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3654254401fc902c3cb4912969f21f88.png)
(1)求反比例函数与一次函数的解析式;
(2)连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a887617b1126a28868fbc1629b8c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(3)若点C在x轴上,D点在坐标平面内,是否存在点C,使得以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4496fe22b40bc63581998e6b7ef6783.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/a944f3d0-5269-494e-bb97-19e872a28c08.png?resizew=462)
您最近一年使用:0次
19-20八年级下·浙江杭州·阶段练习
2 . 我们定义:有一组对角相等而另一组对角不相等的凸四边形叫做等对角四边形.请解决下列问题:
![](https://img.xkw.com/dksih/QBM/2021/1/5/2629560094515200/2629611251466240/STEM/1390301486944ae78a1164b2d8d9cd93.png?resizew=374)
(1)已知:如图1,四边形
是等对角四边形,
,则
______°,
______°.
(2)图①、图②均为
的正方形网格,线段
的端点均在网点上.按要求在图①、图②中以
和
为边各画一个等对角四边形
.
要求:四边形
的顶点D在格点上,所画的两个四边形不全等.
(3)已知:在等对角四边形
中,
,求对角线
的长.
![](https://img.xkw.com/dksih/QBM/2021/1/5/2629560094515200/2629611251466240/STEM/1390301486944ae78a1164b2d8d9cd93.png?resizew=374)
(1)已知:如图1,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0977f8cdcfd681bf7cc788a12bb0a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7960538cb70fcf641b94864a90190d.png)
(2)图①、图②均为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb9d60d456560e9bac66c8b20c49bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3355e2fa0ac6c675f02ee36c3ced4f2d.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
要求:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)已知:在等对角四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0bd83e79c99bd47d393911ceb71f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
名校
3 . 如图,矩形ABCD和矩形CEFG,AB=1,BC=CG=2,CE=4,点P在边GF上,点Q在边CE上,且PF=CQ,连结AC和PQ,M,N分别是AC,PQ的中点,则MN的长为___ .
![](https://img.xkw.com/dksih/QBM/2020/12/14/2613977862430720/2614228560125952/STEM/9eef3d0970ae4778b76ce574ede22dc6.png?resizew=174)
您最近一年使用:0次
2020-12-24更新
|
356次组卷
|
4卷引用:浙江省温州育英2020--2021学年八年级上学期11月月考数学试题
浙江省温州育英2020--2021学年八年级上学期11月月考数学试题(已下线)【新东方】【2021.5.19】【SX】【初二下】【初中数学】【SX00010】2022年河南省郑州市九年级中考二模模拟数学试题卷(已下线)专题21 填空题压轴题之几何综合计算-备战2022年中考数学临考题号押题(全国通用)
4 . 如图,C为线段BD上一动点,分别过点B,D作AB⊥BD,DE⊥BD,连结AC,CE.
(1)已知AB=3,DE=2,BD=12,设CD=x.用含x的代数式表示AC+CE的长;
(2)请问点C满足什么条件时,AC+CE的值最小?并求出它的最小值;
(3)根据(2)中的规律和结论,请构图求出代数式
的最小值.
(1)已知AB=3,DE=2,BD=12,设CD=x.用含x的代数式表示AC+CE的长;
(2)请问点C满足什么条件时,AC+CE的值最小?并求出它的最小值;
(3)根据(2)中的规律和结论,请构图求出代数式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4073c77424958c46fa4216e28db185a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/c69f7d08-02e0-4a28-9e4f-f3ae6d482c68.png?resizew=154)
您最近一年使用:0次
2020-12-21更新
|
325次组卷
|
3卷引用:浙江省杭州市萧山区城北片区2020-2021学年八年级上学期期中数学试题
5 . 如图,在矩形
中,点
是
上的一个动点,连结
,作点
关于
的对称点
,且点
落在矩形
的内部,连结
,
,
,过点
作
交
于点
,设
.
![](https://img.xkw.com/dksih/QBM/2020/12/11/2611898596507648/2613517236207616/STEM/f0cbdf3c474a45faae1fca7669c40b5d.png?resizew=164)
(1)求证:
;
(2)当点
落在
上时,用含
的代数式表示
的值;
(3)若
,且以点
,
,
为顶点的三角形是直角三角形,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee65acab267cfdbcd22b88c1fcb1f4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e94458823a7107ba485c7d88cc7847.png)
![](https://img.xkw.com/dksih/QBM/2020/12/11/2611898596507648/2613517236207616/STEM/f0cbdf3c474a45faae1fca7669c40b5d.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c3b86c19998b62fa17299f1925240df.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d1be9b1e742b25e355af14502549cb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2cf2a4f9747c170b6223278ed15506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2020·浙江·一模
6 . 如图,小区内有一条南北方向的小路
,快递员从小路旁的A处出发沿南偏东53°方向行走
将快递送至B楼,又继续从B楼沿南偏西30°方向行走
将快递送至C楼,求此时快递员到小路
的距离.(计算结果精确到
.参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3e80d2808bf862c9b6169ca4deedfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/121c6701c2d4eb18b5f4f7212f0b993c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6563eb699f1bbc39eced661a2ebfcce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ffe1762baf82e806775172225f56ea7.png)
![](https://img.xkw.com/dksih/QBM/2020/12/9/2610518594322432/2610684727418880/STEM/7c6105439b854718a47c037ad6bc0904.png?resizew=90)
您最近一年使用:0次
19-20九年级·浙江杭州·
7 . 如图,在
中,
,D为斜边
上一动点,
,垂足分别为E、F.当线段
最小时,
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/0c236940-0a2a-44bf-82fa-8996b5368ccb.png?resizew=129)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4123dd2be67e7febc50d83eee589e657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a782ea5cf15a97ae982ef05eafbaf9de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09ed2204edd1cf3651ad0d0605654838.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/0c236940-0a2a-44bf-82fa-8996b5368ccb.png?resizew=129)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
8 . 如图,矩形
中,
为
上一点,
为
上一点,分别沿
,
折叠,
,
两点刚好都落在矩形内一点
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75aa02e18c968b984a2fadbf8784c299.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c7b0e15bfcf4bd7214320bc40f5373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75aa02e18c968b984a2fadbf8784c299.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/29/9686e3cc-063c-4546-aef9-9b572ba6126f.png?resizew=164)
您最近一年使用:0次
2020-12-08更新
|
371次组卷
|
3卷引用:浙江省杭州市滨江区2019-2020学年八年级下学期期末数学试题
浙江省杭州市滨江区2019-2020学年八年级下学期期末数学试题(已下线)【新东方】初中数学977【2020年】【初二下】广东省深圳市福田区深圳实验学校初中部2020-2021学年九年级上学期期中数学试题
9 . 如图,▱ABCD中,点E是BC的中点,连接AE并延长交DC延长线于点F.
(1)求证:CF=AB;
(2)连接BD、BF,当∠BCD=90°时,求证:BD=BF.
(1)求证:CF=AB;
(2)连接BD、BF,当∠BCD=90°时,求证:BD=BF.
![](https://img.xkw.com/dksih/QBM/2020/11/20/2596768154419200/2599885401030656/STEM/d0862373f8ca4e508a9168040c6a6c3b.png?resizew=167)
您最近一年使用:0次
2020-11-24更新
|
574次组卷
|
3卷引用:2020年湖北省潜江市张金中学中考数学模拟试卷(6月份)
2020年湖北省潜江市张金中学中考数学模拟试卷(6月份)2023年浙江省丽水市庆元县江根乡中学中考一模数学试题(已下线)专题12.2 矩形菱形和正方形(2)-备战2021年中考数学精选考点专项突破题集(全国通用)
10 . 如图,Rt△ABC纸片中,∠C=90°,AC=3,BC=4,点D在边BC 上,以AD为折痕△ABD折叠得到△AB′D,AB′与边BC交于点E.若△DEB′为直角三角形,则BD的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/f23e41e0-008d-40cd-9e86-df14440a5b59.png?resizew=151)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/f23e41e0-008d-40cd-9e86-df14440a5b59.png?resizew=151)
A.1 | B.2.5 | C.1或3 | D.1或2.5 |
您最近一年使用:0次