在
的网格中建立如图所示的平面直角坐标系,四边形
的顶点坐标分别为
,
,
,
.请仅用无刻度的直尺按下列要求完成作图(保留作图痕迹).
(1)将线段
绕点
逆时针旋转
得到线段
;
(2)作
的角平分线
;
(3)作线段
关于四边形
的中心点对称的线段
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457500c8671529bb71714b31028e88d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b62194097ac66a5093c57fca2f5b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c09b41032e4722c412c2e2427500a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8efe0cd08f051818b21f7bca7f1183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4129098ad406f5d89c02c3b1c4b905d8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/19/e01d8e78-f882-4bbd-9a0f-e73d66274301.png?resizew=207)
(1)将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
(3)作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
更新时间:2023-10-08 16:40:20
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】已知,P是直线AB上一动点(不与A,B重合),以P为直角顶点作等腰直角三角形PBD,点E是直线AD与△PBD的外接圆除点D以外的另一个交点,直线BE与直线PD相交于点F.
(1)如图,当点P在线段AB上运动时,若∠DBE=30°,PB=2,求DE的长;
![](https://img.xkw.com/dksih/QBM/2022/1/10/2891281773297664/2892040197922816/STEM/348c830d-5ffc-4a21-98a3-47b49fed7be7.png?resizew=159)
(2)当点P在射线AB上运动时,试探求线段AB,PB,PF之间的数量关系,并给出证明.
(1)如图,当点P在线段AB上运动时,若∠DBE=30°,PB=2,求DE的长;
![](https://img.xkw.com/dksih/QBM/2022/1/10/2891281773297664/2892040197922816/STEM/348c830d-5ffc-4a21-98a3-47b49fed7be7.png?resizew=159)
(2)当点P在射线AB上运动时,试探求线段AB,PB,PF之间的数量关系,并给出证明.
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解答题-证明题
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【推荐2】如图,直线
经过
上的点M,并且
,
交
于点N.
![](https://img.xkw.com/dksih/QBM/2023/7/2/3272278343401472/3456335547596800/STEM/dcf8ccf4053a4989a6341991739333e0.png?resizew=156)
(1)求证:直线
是
的切线;
(2)当
时,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32e54364ccade30ff42c94e7be7f4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2023/7/2/3272278343401472/3456335547596800/STEM/dcf8ccf4053a4989a6341991739333e0.png?resizew=156)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0961e886e1f62f6c35563d168633f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,△ABC三个顶点的坐标分别为A(1,1),B(4,2),C(3,4).
(1)请画出△ABC关于原点对称的△A1B1C1;并写出点A1,B1,C1的坐标.
(2)请画出△ABC绕O顺时针旋转90°后的△A2B2C2,并写出点A2,B2,C2的坐标.
(1)请画出△ABC关于原点对称的△A1B1C1;并写出点A1,B1,C1的坐标.
(2)请画出△ABC绕O顺时针旋转90°后的△A2B2C2,并写出点A2,B2,C2的坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/6245357e-3906-4eca-bd5b-0be7a0b60d8b.png?resizew=198)
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解答题-作图题
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【推荐2】如图,
的顶点坐标分别为
,
,
.
(1)画出
关于点
的中心对称图形
;
(2)画出
绕原点
逆时针旋转
的
,直接写出点
的坐标为_________;
(3)若
内一点
绕原点
逆时针旋转
的对应点为
,则
的坐标为____________.(用含
,
的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6147cff1a5f9043fbb81f25d836f2e6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f55c949794beb23869d535f2c59f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069cad81a2b646bdf22e48add2971068.png)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
(2)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403590d719951bd6133479f4e52041bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0d3118a1751d4b4030ec4b68b4e547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/2020/2/23/2405074828877824/2405267829178368/STEM/07f80f58-c335-4a10-9016-4ff963d277bb.png)
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解答题-问答题
|
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名校
【推荐1】对于平面直角坐标系
中的图形
和点
,给出如下定义:将图形
绕点
顺时针旋转
得到图形
,图形
称为图形
关于点
的“直
图形”.例如,图中点
为点
关于点
的“直V图形”.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/d49affa4-e6fe-44d7-b7d7-dd2b4357f04d.png?resizew=235)
(1)
的图像关于原点
的“直
图形”的表达式为__________;
(2)
为
的图像上一点,其横坐标为
,点
的坐标为
.点
关于点
的“直
图形”为点
.
①若
,试说明:不论
为何值,点
始终在直线
上;
②若
,试判断点
能否在直线
上?若能,请求出
的值;若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/d49affa4-e6fe-44d7-b7d7-dd2b4357f04d.png?resizew=235)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8684443809254c64330bb349b473bda5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66c98b0051ca398ce79b5c6d9cbf2d13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf75310b48015af5b03e8b4ea7a16ed.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/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026808536f6b6d265c778e23836fbf13.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8336cfba868fd20ca838742505e2627f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab0906bff33675959408a1d1b6fa823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/3789032e-261a-4da2-a081-e3c7f132406e.png?resizew=230)
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解答题-问答题
|
适中
(0.65)
【推荐2】
是等腰直角三角形,点D是
外部的一点,连接
,
,将线段
绕点A逆时针旋转90°得到线段
,连接
,
.
上时,线段
与线段
的数量关系是_______,位置关系是_______;
(2)如图2,线段
交
于点P,此时(1)中线段
与线段
的关系是否依然成立,请说明理由;
(3)如图3,线段
交
于点P,点Q是
边的中点,连接
,当
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bcd398b14a149fbc64241534466562c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a070d38a2111fb9aecf990494877f6f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)如图2,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)如图3,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c125597fa591a9eee9eba651cf798a6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55d76905ac2451077244e5cea42e173c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐3】(1)【阅读理解】如图,已知
中,
,点
、
是边
上两动点,且满足
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/858cb5b4-c9a0-411a-b600-0835a5cbd74c.png?resizew=153)
求证:
.
我们把这种模型称为“半角模型”,在解决“半角模型”问题时,旋转是一种常用的方法.
小明的解题思路:将半角
两边的三角形通过旋转,在一边合并成新的
,然后证明与半角形成的
全等,再通过全等的性质进行等量代换,得到线段之间的数量关系.
请你根据小明的思路写出完整的解答过程.
证明:将
绕点
旋转至
,使
与
重合,连接
,
……
(2)【应用提升】如图,正方形
(四边相等,四个角都是直角)的边长为4,点
从点
出发,以每秒1个单位长度的速度沿射线
点
运动;点
点
同时出发,以相同的速度沿射线
方向向右运动,当点
到达点
时,点
也停止运动,连接
,过点
作
的垂线交过点
平行于
的直线
于点
,
与
相交于点
,连接
,设点
运动时间为
,
①求
的度数;
②试探索在运动过程中
的周长是否随时间
的变化而变化?若变化,说明理由;若不变,试求这个定值.
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b972027fef607dc50001a3895442a32.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/858cb5b4-c9a0-411a-b600-0835a5cbd74c.png?resizew=153)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc08f3490694a0baf9173c804270f7b.png)
我们把这种模型称为“半角模型”,在解决“半角模型”问题时,旋转是一种常用的方法.
小明的解题思路:将半角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e7106619c08f2bcc1d21f846e8a0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca2698f08d94afa1cd5b81444791f4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
请你根据小明的思路写出完整的解答过程.
证明:将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fb6e81fee5674c3e26a65e58cc506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
……
(2)【应用提升】如图,正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.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/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ca07a30fd25907fbb2f54e0d639b512.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c15b72320563d6a10e05695cf26469c.png)
②试探索在运动过程中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95558cdc4ce1e6d9462d2e91c070655f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/a6efdef7-c993-4f13-be5e-cc776c7530a2.png?resizew=171)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】在如图所示的小正方形网格中,每个小正方形的顶点叫做格点,A,B,C都是格点.请仅用无刻度的直尺完成下列作图,作图过程用虚线表示,作图结果用实线表示.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/73f8290b-7c88-4035-97a2-2f90f806175b.png?resizew=360)
(1)在图1中,在
上找点D,使
且点D恰好在格点上,作出点D,再作
于点E;
(2)在图2中,先作
的角平分线
交(1)中的
于点F,再过点F作
于点H.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/73f8290b-7c88-4035-97a2-2f90f806175b.png?resizew=360)
(1)在图1中,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc13fe21e64d9b45614ed43be847904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497846628a41a9bc750a645e045afb47.png)
(2)在图2中,先作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5899fa8e746f48f470f1b16bb82e4d.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】图①、图②、图③均是4×4的正方形网格,每个小正方形的边长均为1,每个小正方形的顶点叫做格点,只用无刻度的直尺,在给定的网格中按要求画图,所画图形的顶点均在格点上,不要求写出画法,并保留作图痕迹.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/5d95ea73-d1aa-4c58-971a-e5d00c8b39bb.png?resizew=307)
(1)在图①中画一个面积为4的只是中心对称的四边形.
(2)在图②中画一个面积为4的菱形,且邻边不垂直.
(3)在图③中画一个矩形,使其边都是无理数,且邻边不相等.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/5d95ea73-d1aa-4c58-971a-e5d00c8b39bb.png?resizew=307)
(1)在图①中画一个面积为4的只是中心对称的四边形.
(2)在图②中画一个面积为4的菱形,且邻边不垂直.
(3)在图③中画一个矩形,使其边都是无理数,且邻边不相等.
您最近一年使用:0次