如图,
与
的顶点均在边长为1的小正方形网格格点上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/4060cf9d-6737-43bf-878b-1601b9e91df0.png?resizew=171)
(1)判断
与
是否相似,并说明理由;
(2)求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/4060cf9d-6737-43bf-878b-1601b9e91df0.png?resizew=171)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
更新时间:2022-10-27 17:08:41
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
是
的角平分线,
交
的延长线于点
,
,
,求
和
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c51c25b65a37b676ae3c3b71c29f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db17133623795a0e65d9c61745d63187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef74e155f23a36f1e7fbafbdb95d00f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e7106619c08f2bcc1d21f846e8a0de.png)
![](https://img.xkw.com/dksih/QBM/2022/11/23/3115689941295104/3151940543881216/STEM/7aef9b96c0cf421b919a4009c4df9f67.png?resizew=116)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】李华同学用11块高度都是1cm的相同长方体小木块,垒了两堵与地面垂直的木墙,木墙之间刚好可以放进一个正方形ABCD(∠ABC=90°,AB=BC),点B在EF上,点A和C分别与木墙的顶端重合,求两堵木墙之间的距离EF.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/391f12b6-c8a1-424d-b139-ce8d14aa1449.png?resizew=174)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】在如图所示的平面直角坐标系中,每个小正方形的边长都为1.
![](https://img.xkw.com/dksih/QBM/2023/4/23/3222836326154240/3225361589526528/STEM/0b404f7da0a84cc2af19ef7f8c11c9cd.png?resizew=263)
(1)判断
的形状并说明理由.
(2)求
边上高h.
![](https://img.xkw.com/dksih/QBM/2023/4/23/3222836326154240/3225361589526528/STEM/0b404f7da0a84cc2af19ef7f8c11c9cd.png?resizew=263)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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,在边长为1个单位长度的小正方形组成的网格中,给出了格点
(顶点是网格线的交点).
(1)将
绕点C顺时针方向旋转90°得到
,请画出
;
(2)请画一个格点
,使
,且相似比不为1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/28/f7e4c15a-b11d-4fe8-964d-99aa1cd3c52e.png?resizew=174)
(1)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f73e4d0557ca664d1edd70b7275667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f73e4d0557ca664d1edd70b7275667.png)
(2)请画一个格点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828dc8dc7259c510b6d63abf40f60e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c33f4993363c7d17ab5dba81b804be9.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:四边形ABCD对角线AC与BD相交于点O,OD=2OA,OC=2OB.
(1)求证:△AOB∽△DOC;
(2)点E在线段OC上,若AB∥DE,求证:OD2=OE•OC.
(1)求证:△AOB∽△DOC;
(2)点E在线段OC上,若AB∥DE,求证:OD2=OE•OC.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/28/9e3ab71e-0fe0-4693-b039-4c67f34341b0.png?resizew=150)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,经过点
的直线l与双曲线
交于点
,直线
分别交曲线
和
于点M、N,点
在直线
上.连接
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/b10319a5-084f-4baf-b797-3aed4705e90f.png?resizew=219)
(1)求n的值及直线l的解析式;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8950c7bc835103d52ceffab14b6b31a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68db89b7ac545b8823e9c06946e3a992.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceba3770a26f52ab88208d54605758e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68db89b7ac545b8823e9c06946e3a992.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478b979574d96f85d89622c0a7fbfd13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93696126bed713312f4b0657ade08ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/b10319a5-084f-4baf-b797-3aed4705e90f.png?resizew=219)
(1)求n的值及直线l的解析式;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb71b245d93fe7621aba2e39e9c31465.png)
您最近一年使用:0次