在平面直角坐标系中,点A的坐标为
,点B为y轴正半轴上的一个动点,以B为直角顶点,
为直角边在第一象限作等腰
.
(1)如图1,若
,则点C的坐标为_______;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/b3a4059e-b119-4868-8c99-fb8865b0dd5a.jpg?resizew=169)
(2)如图2,若
,点D为
延长线上一点,以D为直角顶点,
为直角边在第一象限作等腰
,求证:
;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/e21d67b7-35a8-4ec1-ad6a-a7ffb45dc27f.jpg?resizew=255)
(3)如图3,以B为直角顶点,
为直角边在第三象限作等腰
,连接
,交y轴于点P,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96d337c61bc385106ddc1882a6bc16a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e2857963e3ea3578e9a13638c3a2c0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/b3a4059e-b119-4868-8c99-fb8865b0dd5a.jpg?resizew=169)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03f416cb4d50a5f473df4bbceeb3094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab34c8e368a7a2346a3922f5c532823d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5b4ea605cf0b98e428d071f6be6762.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/e21d67b7-35a8-4ec1-ad6a-a7ffb45dc27f.jpg?resizew=255)
(3)如图3,以B为直角顶点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d33fb0ee0857654dad65e294ab41f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/8/e9ca717f-b310-4573-96f6-55adbe1ffba4.jpg?resizew=195)
更新时间:2024-03-08 21:47:08
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】在如图所示的平面直角坐标系中,点
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/26e33e51-d8f0-4abf-a376-e81c4b1b1758.png?resizew=273)
(1)求四边形
的面积;
(2)在
轴上找一点
,使
的面积等于四边形
面积的一半,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a525534689bd2701205d4ab17574c39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbdef5d0c05acbf63fa72fa85c5bb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0785a08303a75cac963bc78341b513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff10e963c49a823ca0156fb83824dbe9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/26e33e51-d8f0-4abf-a376-e81c4b1b1758.png?resizew=273)
(1)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2cc5f8cec8c498aa12c99c04e1c97d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系中,长方形
的面积为
,
在
轴正半轴上,OC在
轴正半轴上,且
.
(1)求点
的坐标:
(2)经过原点
的直线
与线段
交于点
,若直线
将长方形
的面积分为
两部分,求点
的坐标:
(3)在平面内存在点
(不与
,
重合),使
,当
在
上方(或
下方)时,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b837fd9c52f60bfb3b6852733abc790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.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/497e34cb645ed931bea31c5d4c558c94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/50fde611-281d-4f86-99a8-7d7eb7e2045e.png?resizew=383)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)经过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)在平面内存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/8cdc618f13a379e5f85a4f202416084e.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/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b529b9d7e3537e74b8e31e1f7891db23.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在△ABC 中,∠BAC=90°,AB=AC,D 是 AC 边上一动点, CE⊥BD 于 E.
(1)如图(1),若 BD 平分∠ABC 时,①求∠ECD 的度数;②求证:BD=2EC;
(2)如图(2),过点 A 作 AF⊥BE 于点 F,猜想线段 BE,CE,AF 之间的数量关系并证明你的猜想.
(1)如图(1),若 BD 平分∠ABC 时,①求∠ECD 的度数;②求证:BD=2EC;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/653684d5-0012-4811-90f4-4acd16b4e81a.png?resizew=411)
(2)如图(2),过点 A 作 AF⊥BE 于点 F,猜想线段 BE,CE,AF 之间的数量关系并证明你的猜想.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图是由小正方形组成的5×7网格,每个小正方形的顶点叫做格点.矩形ABCD的四个顶点都是格点.仅用无刻度的直尺在给定网格中完成画图,画图过程用虚线表示.
(1)在图(1)中,先在边AB上画点E使AE=3BE,再过点E画直线EF,使EF平分矩形ABCD的面积;
(2)在图(2)中,画线段BD的垂线MN.
(1)在图(1)中,先在边AB上画点E使AE=3BE,再过点E画直线EF,使EF平分矩形ABCD的面积;
(2)在图(2)中,画线段BD的垂线MN.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/54a277fc-2380-455e-be51-8fc25523817b.png?resizew=415)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在
中,
,
,
是
的平分线,交
于点
,
是
的中点,连接
并延长,交
的延长线于点
,连接
.求证:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236c72942e305dfdede4b4f44c650e59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/7/4cacd98c-b5c9-4ee1-b5a0-fc1588e321c8.png?resizew=200)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30872f0bea299dbe96d13d727f92061.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在
中,
,现有两点
、
分别从点
、点
同时出发,按箭头方向沿三角形的边运动,已知点
的速度为1cm/s,点
的速度为2cm/s.当点
第一次到达
点时,点
、
同时停止运动.请解答下列问题:
、
运动几秒后,
、
两点重合?
(2)点
、
运动几秒后,
为等边三角形?
(3)当点
、
在
边上运动时,是否存在以
为底边的等腰
?若存在,请求出此时
、
运动的时间;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1369c6f1b9683278afe8c3f4148a9495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次