如图,在平面直角坐标系中,已知
,其中
满足关系式
.
![](https://img.xkw.com/dksih/QBM/2021/7/9/2760622555332608/2817173654044672/STEM/57b51129-4055-4904-9282-968f5ab4d3d1.png)
(1)求
的值;
(2)在第三象限是否存在一点
,使四边形
的面积是三角形
面积的
倍,若存在,求出点P的坐标;若不存在,请说明理由;
(3)点D是坐标平面内的点,若点D与
三点构成平行四边形,请直接写出符合条件的点D的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b018d2c607b197f7b262ab2f493a5030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1698b9b5507d27aaed703bfddb8f99bf.png)
![](https://img.xkw.com/dksih/QBM/2021/7/9/2760622555332608/2817173654044672/STEM/57b51129-4055-4904-9282-968f5ab4d3d1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)在第三象限是否存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1fb2aee3b2e7f4bfbb23474c3acf6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde59b27b9e1cf847178e6416b8806d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
(3)点D是坐标平面内的点,若点D与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
更新时间:2021-09-27 15:37:22
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】在平面直角坐标系:
中,点
,点
分别在x轴,y轴的正半轴上,且满足
,试判断
的形状.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f74ad7ec5da34146be0205b7af0a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e87b9a0e3e38cb7f4b5e254cc3a4e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-问答题
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适中
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【推荐1】如图,过点A(2,0)的两条直线
,
分别交y轴于点B、C,其中点B在原点上方,点C在原点下方,已知AB=
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/6/e1b1c4c7-c7fc-4cc6-890c-a1da4f9e7b68.png?resizew=185)
(1)求点B的坐标;
(2)若BC=4,求
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509580d2ea77faa1fde8723df2c35c1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50690dab38f4512eb72e18b7f86cf6f6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/6/e1b1c4c7-c7fc-4cc6-890c-a1da4f9e7b68.png?resizew=185)
(1)求点B的坐标;
(2)若BC=4,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,在
中,三个顶点的坐标分别为
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/7430cc7e-a6d2-46a7-a052-1ea6acd814ad.png?resizew=257)
(1)将
向左平移5个单位长度,再向上平移3个单位长度得到
,直接写出
的三个顶点坐标,并在图14的直角坐标系中画出
;
(2)设点
在
轴上,且
与
的面积相等,直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a23e87d16c32b5aa4357f481b5808a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be4715dd5f2139c84d0302095d226302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437f923730cfbd1bc6f62738d607eca7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/13/7430cc7e-a6d2-46a7-a052-1ea6acd814ad.png?resizew=257)
(1)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-作图题
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名校
【推荐3】如图,在平面直角坐标系中,点
的坐标是
,在
轴上任取一点
,完成以下操作步骤:
①连接
,作线段
的垂直平分线
,过点
作
轴的垂线
,记
,
的交点为
.
②在
轴上多次改变点
的位置,用(1)的方法得到相应的点
,把这些点用平滑的曲线连接起来.观察画出的曲线
,猜想它是我们学过的哪种曲线.
某数学兴趣小组在探究时发现在
轴上取几个特殊位置的点
,可以求出相对应的点
的坐标;
例如:取点
,过
作
轴于点
.
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8cfdb819e4424a61ce03b0cfb07c3e.png)
在
中,根据勾股定理得.
________;
在
的垂直平分线上
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae675137b31b89594c92e9fdcdcb579d.png)
解得:
________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3ad64052e24c854c0b3d02ecc3bc03.png)
(1)请帮忙完成以上填空;
(2)请你帮该数学兴趣小组求出点
所在曲线
的解析式;
(3)兴趣小组在建立平面直角坐标系时受纸张大小的限制,若
点只能在
的范围内移动,求
的取值范围.(直接写出答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
①连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
某数学兴趣小组在探究时发现在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
例如:取点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad3a4d8eb0a4f3dd417124a19f60066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66321c27313f40893e43d0a87417c4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33353e31ffc20d606eb1a9094f8a1baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8cfdb819e4424a61ce03b0cfb07c3e.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38c41700c823af569af37a652caac96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5819f51ddc056ed5dd269afb471d865c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c77ccada074400aa8d24e9c2f0b5848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b791fd2f3445a072e32dbb17bd71168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae675137b31b89594c92e9fdcdcb579d.png)
解得:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3ad64052e24c854c0b3d02ecc3bc03.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/20/5112a81b-293b-49ff-947d-1c272089b489.png?resizew=231)
(1)请帮忙完成以上填空;
(2)请你帮该数学兴趣小组求出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
(3)兴趣小组在建立平面直角坐标系时受纸张大小的限制,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0318bc6ed4f9273233d3531325294f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】如图,在四边形
中,
,
,点P从点A出发以
的速度向点D运动;点Q从点C同时出发,以
的速度向点B运动,当点Q到达点B时,点P也停止运动,设点P,Q运动的时间为
.
(1)
边的长度为
,t的取值范围为 ;
(2)从运动开始,当t取何值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b326923ec46935682f2e5a729b49f75d.png)
(3)是否存在t,使得
是等腰三角形?若存在,请求出t值;若不存在,请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79f1c8f793077e5cf5359a61d7dcb218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45450f8cc7282af961c628d8786dce0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d989a128e30a701dfff5592476a76bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1a48b92c61d209d0556e4cd8fdb70b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/25/e87a0d8c-aa41-49eb-97db-5ed7c2000a6c.png?resizew=178)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
(2)从运动开始,当t取何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b326923ec46935682f2e5a729b49f75d.png)
(3)是否存在t,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0b901937ed0802f380b79b5f0040ca7.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】图①、图②均为
的正方形网格,每个小正方形的顶点称为格点,每个小正方形的边长均为1.线段
的端点均在格点上,只用无刻度的直尺,在给定的网格中按要求作图,使所画图形的顶点均在格点上,并回答问题.
(1)在图①中画一个四边形
,使四边形
中的两组对角分别相等;
(2)在图②中画一个四边形
,使四边形
中有一组对角相等,另一组对角不相等;
(3)四边形
的面积是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb9d60d456560e9bac66c8b20c49bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3355e2fa0ac6c675f02ee36c3ced4f2d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/23/4eccbc94-da06-45fd-8d21-aba4ba224bc4.png?resizew=340)
(1)在图①中画一个四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在图②中画一个四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
(3)四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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