在△ABC中,AB = BC,∠ABC=90°.
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897136264536064/2936499047063552/STEM/2b19a923539a4cfc8727a630f57c0e01.png?resizew=456)
(1)如图1,已知DE⊥BC,垂足为D,若∠DBE=60°,AC=
,BD=
,求线段AE的长;
(2)如图2,若点D在△ABC内部,点F是CD的中点,且∠BAD =∠CBF,求证:∠DBF=45°;
(3)如图3,点A与点
关于直线BC对称,点D是△
内部一动点,∠ADC =90°.若AC=4,则线段
的长是否有最小值,如果有,请直接写出这个最小值;如果没有,请说明理由.
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897136264536064/2936499047063552/STEM/2b19a923539a4cfc8727a630f57c0e01.png?resizew=456)
(1)如图1,已知DE⊥BC,垂足为D,若∠DBE=60°,AC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(2)如图2,若点D在△ABC内部,点F是CD的中点,且∠BAD =∠CBF,求证:∠DBF=45°;
(3)如图3,点A与点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d7ffb7889a31b267a85f1ea238138e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b556bcc7406b1571cd3a0748d97791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6790a6927c746dd1373770912dc954ee.png)
更新时间:2022-03-15 05:45:30
|
相似题推荐
解答题-问答题
|
困难
(0.15)
【推荐1】如图1,平面直角坐标系中,直线
交
轴于点
,交
轴正半轴于点
.
![](https://img.xkw.com/dksih/QBM/2021/8/2/2777599507824640/2782653650280448/STEM/8154d963-f202-4b6c-854a-3b98fcfe409e.png)
![](https://img.xkw.com/dksih/QBM/2021/8/2/2777599507824640/2782653650280448/STEM/2a19b672-e91a-416b-b62d-93b624c1b50e.png)
![](https://img.xkw.com/dksih/QBM/2021/8/2/2777599507824640/2782653650280448/STEM/c5208f40-9b7e-4df1-9e7f-e33eb5fe6fe4.png)
(1)求点
的坐标;
(2)如图2,直线
交
轴负半轴于点
,且
,
为线段
上一点,过点
作
轴的平行线交直线
于点
,设点
的横坐标为
,线段
的长为
,求
与
之间的函数关系式;
(3)在(2)的条件下,
为
延长线上一点,且
,在线段
上是否存在点
,使
是以
为斜边的等腰直角三角形,若存在,请求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cdc4824212e952b5a32d89187b8997a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8fd1ce0df99890a2147191d6fe8961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2021/8/2/2777599507824640/2782653650280448/STEM/8154d963-f202-4b6c-854a-3b98fcfe409e.png)
![](https://img.xkw.com/dksih/QBM/2021/8/2/2777599507824640/2782653650280448/STEM/2a19b672-e91a-416b-b62d-93b624c1b50e.png)
![](https://img.xkw.com/dksih/QBM/2021/8/2/2777599507824640/2782653650280448/STEM/c5208f40-9b7e-4df1-9e7f-e33eb5fe6fe4.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)如图2,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)在(2)的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a6a050763dc557c76bfc1cb0dc2347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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解答题-证明题
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困难
(0.15)
【推荐1】如图1,在矩形
中,
(其中
),点P是
边上一动点(点P不与A重合),点E是
边的中点,连接
,将矩形
沿直线
进行翻折,其顶点A翻折后的对应点为O,连接
并延长,交
边于点F(点F不与C重合),过点F作
的平分线
,交矩形
的边于点G.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/4/34ed4a81-0cdf-4ebf-82e4-49593fe27b5e.png?resizew=568)
(1)求证:
;
(2)如图2,在点P运动过程中,若E,O,G三点在同一条直线上时,点G与点D刚好重合,求n的值;
(3)若
,连接
,
,当
是以
为直角边的直角三角形时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e968d014047afef23bb59dc9685eef15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e468312d09c6563c9094b710a35a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a09d2d1b9b9d4562d74196cef3e3ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/4/34ed4a81-0cdf-4ebf-82e4-49593fe27b5e.png?resizew=568)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac56213b4a29eff2f445fbc2d10db1f3.png)
(2)如图2,在点P运动过程中,若E,O,G三点在同一条直线上时,点G与点D刚好重合,求n的值;
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4505508b3e36db64a207dcdaf8eb22dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bd991211ec79b47a4be52933bb8e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fc1af8ccb1e6662215b72aae7625601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e253f26da9c7c4b5e8fcfac3ca0f168d.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】如图,在平面直角坐标系中,抛物线
交
轴负半轴于点
(点
在点
左边),交
轴于点
.
(1)求抛物线解析式;
(2)点
为对称轴右
轴下方的侧抛物线上一点,射线
关于
轴对称图形(射线
)交抛物线于点
,若点
的横坐标为
,点
的横坐标为
,求
与
的函数关系式;
(3)在(2)的条件下,射线
分别交抛物线对称轴于点
,过点
作
轴的平行线
,在对称轴左侧作
交
于点
,
,连接
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74011c7c6a65b1fcabb140074462e243.png)
(1)求抛物线解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce066003c0a1f0879cbca2f32802e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce066003c0a1f0879cbca2f32802e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)在(2)的条件下,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed33f851027978e3a7caa39bc679d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8db072e2b6104671b82f948012fb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3b0b11a80e8b107e55534d7fda9f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8db072e2b6104671b82f948012fb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99ae55bbd03bc45b96ed05d35eec653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6515d910b9e0324cd1d5a45c3a80775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b52abfd749a5170bacdbd884519920.png)
![](https://img.xkw.com/dksih/QBM/2021/2/3/2649957609152512/2651692248940544/STEM/d27c144a-f3fe-4d6d-8acc-ffe41283902f.png)
您最近一年使用:0次
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(0.15)
真题
【推荐3】如图1,在平面直角坐标系中,直线
轴,交y轴的正半轴于点
,且
,点B是y轴右侧直线l上的一动点,连接
.
(2)如图2,若动点B满足
,点C为
的中点,
点为线段
上一动点,连接
.在平面内,将
沿
翻折,点B的对应点为点P,
与
相交于点Q,当
时,求线段
的长;
(3)如图3,若动点B满足
,
为
的中位线,将
绕点B在平面内逆时针旋转,当点O、E、F三点共线时,求直线EB与x轴交点的坐标;
(4)如图4,
平分
交
于点
,
于点
,交
于点
,
为
的一条中线.设
,
,
的周长分别为
,
,
.试探究:在B点的运动过程中,当
时,请直接写出点B的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fed78ea04659678011a0e4564cb781a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
(2)如图2,若动点B满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b136c45d114d9432aa492909cda4f2.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/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2e118d8156830746055c1b2e759ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
(3)如图3,若动点B满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ba8d13388a5114239b9046d8bc60191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
(4)如图4,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707aa65d1ce8ca4f59ef118d148cb947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80651f797ab9dccfd7163c605b091ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fb6e81fee5674c3e26a65e58cc506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e00bf73d03dded1cf5f83cc5339361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173bc7a36757d77f01213411edd25241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b473870c9384a4863f900acbacb8a85.png)
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困难
(0.15)
【推荐1】如图(1),在Rt△ABC中,∠C=90°,边AC=8,BC=6,点M、N分别在线段AC、BC上,将△ABC沿直线MN翻折,点C的对应点是C′.
![](https://img.xkw.com/dksih/QBM/2022/5/11/2976879804334080/2978737558773760/STEM/42fa09ea-889e-4277-8d36-e111d6b4490a.png?resizew=520)
(1)当M、N分别是所在边的中点时,求线段CC′的长度;
(2)若CN=2,求点C′到线段AB的最短距离;
(3)如图(2),当点C′落在边AB上时,
①四边形CMC′N能否成为正方形?若能,求出CM的值;若不能,说明理由.
②请直接写出点C′运动的路程长度.
![](https://img.xkw.com/dksih/QBM/2022/5/11/2976879804334080/2978737558773760/STEM/42fa09ea-889e-4277-8d36-e111d6b4490a.png?resizew=520)
(1)当M、N分别是所在边的中点时,求线段CC′的长度;
(2)若CN=2,求点C′到线段AB的最短距离;
(3)如图(2),当点C′落在边AB上时,
①四边形CMC′N能否成为正方形?若能,求出CM的值;若不能,说明理由.
②请直接写出点C′运动的路程长度.
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解答题-问答题
|
困难
(0.15)
【推荐2】如图是由边长为1的小正方形构成的网格,每个小正方形的顶点叫做格点,A,B,C三点是格点,点D,E为非格点,仅用无刻度的直尺在给定网格中完成画图.
(1)如图1,在
上画点F,使
;在
上画一点G,使
;
(2)如图2,在
上画点H,使
最小;
(3)如图3,在
上画点M,使
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/25/a2532255-9d35-4709-825e-ea35f5cbe849.jpg?resizew=578)
(1)如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4951db8a820b05108e134003e484f6e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9665c15cfb2101ec0130d681c69bfd1.png)
(2)如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5099b776ce3555a20631d635e4ce582f.png)
(3)如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82d87584318399e55c36c27f1e3e9a7.png)
您最近一年使用:0次