如图是由小正方形组成的8×6网格,每个小正方形的顶点叫做格点,的三个顶点都是格点,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.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/11/7dc6c90f-208c-4da2-afca-dc2b27432afb.png?resizew=409)
(1)在图1中,先在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3ba8b214034c287276f4966069d95e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
(2)在图2中,点P是边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
更新时间:2023-06-05 14:12:39
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,在△ABC中,DM,EN分别垂直平分边AC和边BC,交边AB于M,N两点,DM与EN相交于点F.
(1)若AB=3cm,求△CMN的周长;
(2)若∠MFN=70°,求∠MCN的度数.
(1)若AB=3cm,求△CMN的周长;
(2)若∠MFN=70°,求∠MCN的度数.
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863618805309440/2864146052825088/STEM/533a497d-ea2e-4ce2-a1d1-9c2f52c036bc.png?resizew=179)
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,
,点
在
上,
平分
,交
于点
,点
是线段
的中点,连接
,
与
相等吗?请说明理由.
因为
平分
已知),
所以 (角的平分线的意义).
因为
,
已知),
所以
.(等式性质)
而
( ),
,
所以
(等量代换).
所以 ( ).
又因为
线段中点的意义)
所以 ( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa485cf3776f36aaf4abaadaf30fb85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599f9d212dc7766600f9b531053bc25f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/146a63bac5ecd239f2696801e8eaa0b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc94f740cd394ef75a92288f71511233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c1226108900ae79995178f5432c88c.png)
因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6f85754342474a18d668e45d08537f.png)
所以 (角的平分线的意义).
因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cadc687a5c1428c262a3d3ada73f84de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
所以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c4b4b4f95c6e9e198db219562d4c03.png)
而
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd56c995c9db380b5a6b74c470a8ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cd9a7068de096606d1ab991f5e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12af1b0259ff48f016ff19f2a3031583.png)
所以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824b79ece4113eaed456abc34ea80c2b.png)
所以 ( ).
又因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9008757a0ce48d3202db4f41d4ad317.png)
所以 ( ).
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐3】如图,四边形ABCD是菱形,AD=5,过点D作AB的垂线DH,垂足为H,交对角线AC于M,连接BM,且AH=3.动点P从点A出发,沿折线A﹣B﹣C方向以2个单位/秒的速度向终点C匀速运动,同时动点Q从点C出发,沿CB方向以1个单位/秒的速度向终点B匀速运动,设
MPQ的面积为S,运动时间为t秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/1f40a3b9-7a8f-4bf8-a2da-b9ac3bc9b9fb.png?resizew=377)
(1)求DM的长;
(2)当点P在BC上运动时,求S与t之间的函数关系式,并求出t的取值范围;
(3)当点P在AB上运动时,是否存在这样的t值,使∠MPB与∠BCD互为余角,若存在,求出t值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/1f40a3b9-7a8f-4bf8-a2da-b9ac3bc9b9fb.png?resizew=377)
(1)求DM的长;
(2)当点P在BC上运动时,求S与t之间的函数关系式,并求出t的取值范围;
(3)当点P在AB上运动时,是否存在这样的t值,使∠MPB与∠BCD互为余角,若存在,求出t值,若不存在,请说明理由.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】综合与探究
如图,抛物线
与x轴交于点
和点
,与y轴交于点C,连接BC.
![](https://img.xkw.com/dksih/QBM/2022/5/28/2989103897042944/2990411749597184/STEM/1413bc44-705f-4215-8d93-64e24b0781d7.png?resizew=336)
(1)求抛物线的表达式及点C的坐标;
(2)点P是抛物线对称轴上一点,点Q为平面内一点,当以点B、C、P、Q为顶点的四边形是以BC为边的矩形时,请直接写出点P的坐标;
(3)点D是第四象限内抛物线上一动点,当∠BCD=2∠ABC时,求点D的坐标.
如图,抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c468dc5cc34c14a188493a21019e8f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b8c639c851e0044ee22020324c5570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6711f23c2900c7b00a833bf21edb23d.png)
![](https://img.xkw.com/dksih/QBM/2022/5/28/2989103897042944/2990411749597184/STEM/1413bc44-705f-4215-8d93-64e24b0781d7.png?resizew=336)
(1)求抛物线的表达式及点C的坐标;
(2)点P是抛物线对称轴上一点,点Q为平面内一点,当以点B、C、P、Q为顶点的四边形是以BC为边的矩形时,请直接写出点P的坐标;
(3)点D是第四象限内抛物线上一动点,当∠BCD=2∠ABC时,求点D的坐标.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,D为
内的一点,E为
外的一点,且
.求证:
![](https://img.xkw.com/dksih/QBM/2021/9/7/2802838325436416/2803218336571392/STEM/c8a47060-617f-4b42-bf8a-bd14dfb6b382.png)
(1)
;
(2)
.
![](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/9fc16bf53f6b6a6a40c2ebb575956dda.png)
![](https://img.xkw.com/dksih/QBM/2021/9/7/2802838325436416/2803218336571392/STEM/c8a47060-617f-4b42-bf8a-bd14dfb6b382.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952e4cdbbd5e65a35f65139a2ea8e0d6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50524f9df8353f6a81de4f76bb3c4c4.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】如图是由小正方形组成的
网格,每个小正方形的顶点叫做格点.点
是格点,
与网格线分别交于点
,
.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.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/0e5786eb-b51d-4c4f-9776-e0281924ebbe.png?resizew=275)
(1)在图1中,先在优弧
上画点
,使得
,再画
的平分线
,交
于点
;
(2)在图2中,
是
上一点,先画将点
绕点
逆时针旋转
的对应点
,再画弦
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd4be97adde17423d59d86d18318c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/0e5786eb-b51d-4c4f-9776-e0281924ebbe.png?resizew=275)
(1)在图1中,先在优弧
![](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/0c284ccb6f4ee7a8690013d2ce16e226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)在图2中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2934239d4275870e77994feb6af6594e.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系中,点A,B,C的坐标分别为
.请仅用无刻度的直尺,分别在图1,图2中画出满足条件的直线(保留画图痕迹).
(1)在图1中,画直线
;
(2)在图2中,画直线
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9759510f19341d493d9fc190fbe50dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/22a1a2d2-a813-4172-930f-e3636f2e684e.png?resizew=390)
(1)在图1中,画直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc7930306bb39f74f20b860f0a7004a.png)
(2)在图2中,画直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a19cb0b256a7ebd88deca7b626dd26.png)
您最近一年使用:0次