如图,将边长为5的菱形ABCD放置于直角坐标系内,顶点B,C在x轴上,反比例函数
的图象经过点
,并与线段AB交于点
,反比例函数
的图象经过点D,AD交y轴于点G.点P是y轴正半轴上的一个动点,过点P作y轴的垂线,分别交反比例函数图象于点M,N,
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712440423456768/2725925852315648/STEM/92555e19-7598-4417-83be-6d77c1a2f2b3.png)
(1)
,
,
.
(2)当
时,求P点坐标;
(3)在点P运动过程中,直线AD上是否存在点Q,使以A,E,N,Q为顶点的四边形是平行四边形?若存在,直接写出点N的坐标:若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc1130e67addf19389a5d33ead304c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c234bf5b6b37f4edf9f31a38dc36a25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5a627e681311c9647c72e7e37e3243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03517310ea1e913f709753592ac65ffd.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712440423456768/2725925852315648/STEM/92555e19-7598-4417-83be-6d77c1a2f2b3.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73cbd27d06065f2ddd5cf5ccbe5bef48.png)
(3)在点P运动过程中,直线AD上是否存在点Q,使以A,E,N,Q为顶点的四边形是平行四边形?若存在,直接写出点N的坐标:若不存在,说明理由.
2021·广东河源·一模 查看更多[2]
更新时间:2021-05-21 17:33:15
|
相似题推荐
解答题-作图题
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较难
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【推荐2】如图,在平行四边形ABCD中,E是边AD上一点,CE与BD相交于点O,CE与BA的延长线相交于点G,已知DE=2AE,CE=8.
(1)求GE的长;
(2)若
=
,
=
,用
、
表示
;
(3)在图中画出
.(不需要写画法,但需要结论)
(1)求GE的长;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e46b582f991cf8440c9b0821f37e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9681cd1032789ec7f77641055d18573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca7e66d20b6f2beb608445f6f522bf4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e4e728919815a86c11400435661f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9681cd1032789ec7f77641055d18573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e4e728919815a86c11400435661f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329fdf7d989f77a32ca9e0361a9cc956.png)
(3)在图中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea0cc69c6bdc2fba6a0592ed8f0f77d7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/974ce0b4-4c08-4f2f-a23c-505673433e22.png?resizew=151)
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解答题-问答题
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较难
(0.4)
【推荐1】如图1,在矩形
中,
,分别以
所在的直线为
轴、
轴,建立如图所示的平面直角坐标系,连接
,反比例函数
的图象经过线段
的中点
,并与矩形的两边交于点
和点
,直线
经过点
和点
.
(1)连接
、
,求
的面积;
(2)如图2,将线段
绕点
顺时针旋转—定角度,使得点
的对应点
好落在
轴的正半轴上,连接
,作
,点
为线段
上的一个动点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f37f7bbe3b52db2a59a7199959262d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99d339d8b270723212595413aa295e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03517310ea1e913f709753592ac65ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/e0995bf033e26d3ea9d20288a96fc527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/27/83e496dd-bed5-4982-a69a-5f5e663d270f.png?resizew=167)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/27/4b8381c1-7b6c-4be7-b9fb-46e8f40c99d1.png?resizew=170)
(1)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c3b6c7e609061ef22832bf5c1df5d1.png)
(2)如图2,将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f24c9efe36cee900575e77468c28210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bcbad18dd28c0d8757a233a6072cfd8.png)
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解答题-问答题
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较难
(0.4)
【推荐2】平面直角坐标系
中,横坐标为a的点A在反比例函数
的图象上,点
与点A关于点O对称,一次函数
的图象经过点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/c81577cb-41d6-45c9-8ab4-8717f668ca52.png?resizew=343)
(1)设
,点
在函数
、
的图象上,分别求函数
、
的表达式.
(2)如图①,设函数
、
的图象相交于点B,点B的横坐标为
,
的面积为16,求k的值;
(3)设
,如图②,过点A作
轴,与函数
的图象相交于点D,以
为一边向右侧作正方形
,试说明函数
的图象与线段
的交点P一定在函数
的图象上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66905fec4b8f00b3f135f4906b864976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe47e01d46d427917ef49b8b4547790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/c81577cb-41d6-45c9-8ab4-8717f668ca52.png?resizew=343)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42e598dd62bf7f73beceeedecc66d74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(2)如图①,设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9878a063abcb6098d10560f2bf2d4b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c040780584f7b30a927f7814f0a7a7.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8493a0cd10d3d0399173c04163740a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d3a0273d1f3046dfad2086d0df56c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
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解答题-问答题
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较难
(0.4)
【推荐1】综合与实践
综合与实践课上,同学们以“四边形的折叠”为主题开展数学活动.
操作判断
(1)操作一:如图1,将正方形纸片
沿对角线
折叠,然后将纸片展开;
操作二:依次将边
,
折到对角线AC上,折痕分别为
,
,使点
,
分别落在对角线
上的点
,
处,将纸片展开,连接
,
.
根据以上操作,易得出结论:四边形
的形状是______.
迁移探究
(2)如图2,将正方形纸片换成矩形纸片,按照(1)中的方式操作,继续探究.
①小明认为此时四边形
的形状仍然符合(1)中的结论,你认为小明的说法正确吗?请说明理由;
②小亮认为可以通过改变矩形
与
的比值,让四边形
成为菱形,你认为小亮说法正确吗?请简述理由.
拓展应用
(3)在(2)的条件下,若
,当
,
分别是线段
的三等分点时,请直接写出四边形
的面积.
综合与实践课上,同学们以“四边形的折叠”为主题开展数学活动.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/4/a46a27aa-e930-4976-aadb-63d866b1532a.png?resizew=469)
操作判断
(1)操作一:如图1,将正方形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
操作二:依次将边
![](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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
根据以上操作,易得出结论:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
迁移探究
(2)如图2,将正方形纸片换成矩形纸片,按照(1)中的方式操作,继续探究.
①小明认为此时四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
②小亮认为可以通过改变矩形
![](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/611f100dcfa7803db6eb233e2e7f2dab.png)
拓展应用
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
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解答题-证明题
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较难
(0.4)
【推荐2】如图1,四边形
是正方形,点
分别在
上,点
在
的延长线上,且
.
(1)求证:①
;②
;
(2)以线段
为边作出正方形
,连接
猜想并写出四边形
是怎样的特殊四边形,并证明你的猜想.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a62592f0207777d70bdc980aff0e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdba2ac1a72eea482f5578843e00357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee7bf41b012f4db7b5d4fcef9346ff9.png)
(1)求证:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5ecc482b5968d904f0e04d0834e372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8cbde98d09c06d2cc5481c6a8fbad8.png)
(2)以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7591190559568dd5c1bf76c2c02f40d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13beccd9605a08cef016cb2f0f98849f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35da6d44f69897574e057fc255622580.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/19/5996aa08-9b60-4462-9535-9a67e605e600.png?resizew=331)
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