如图,在
的网格中,小正方形的边长为1,小正方形的顶点称为格点,格点
如图所示,请按要求在网格中画格点三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/20/a6a8d037-1c8e-470e-ac7a-9121da4803ef.png?resizew=462)
(1)在图1中画等腰
,使
与
面积相等但不全等.
(2)在图2中画
,使
与
面积相等,且满足
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b5ddc6a47cacd00257051873947124f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/20/a6a8d037-1c8e-470e-ac7a-9121da4803ef.png?resizew=462)
(1)在图1中画等腰
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)在图2中画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/562dada0f676dc185d2d2bca57afe6c4.png)
更新时间:2022-06-19 16:54:55
|
相似题推荐
解答题-作图题
|
适中
(0.65)
【推荐1】下面是小明同学设计的“已知底边及底边上的中线作等腰三角形”的尺规作图过程.
(1)要求:用直尺和圆规根据下面的“作法”画出图形(保留作图痕迹).
已知:如图,线段a和线段b.
求作:
使得
边上的中线为b.
作法:①作射线
并在射线
上截取
;
②作线段
的垂直平分线
交
于点D;
③以点D为圆心,b为半径作弧交
于点A;
④连接
和
.
则
为所求作的等腰三角形.
(2)试说明所作的三角形是符合条件的三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/24/3c049b28-72a0-4136-b080-7826794eb5de.png?resizew=135)
(1)要求:用直尺和圆规根据下面的“作法”画出图形(保留作图痕迹).
已知:如图,线段a和线段b.
求作:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2811f7244cf4afe048b48adc1386ba.png)
作法:①作射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e781a2489271bfd1597cba1bb6f5887.png)
②作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
③以点D为圆心,b为半径作弧交
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
④连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)试说明所作的三角形是符合条件的三角形.
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,已知△ABC,请用直尺和圆规以C为一个公共顶点作△CDE,使△CDE与△ABC全等,则全等的依据是 .(不写作法,保留作图痕迹)
![](https://img.xkw.com/dksih/QBM/2019/11/12/2332336001769472/2333204678631424/STEM/2d3bd43a0e984e9b9dd863f4a0d2c05e.png?resizew=141)
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,锐角三角形
内接于
,D是弧
上一点,连接
交
于点E,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/155aaa05-1aea-4c0c-bdcd-ef1fc08dce03.png?resizew=127)
(1)求证:
;
(2)若
,
,求
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc4a5927c4fa3e21769acf7dfee5a435.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/155aaa05-1aea-4c0c-bdcd-ef1fc08dce03.png?resizew=127)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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解答题-证明题
|
适中
(0.65)
真题
【推荐2】如图,点
在以
为直径的
上,点
是
的中点,过点
作
垂直于
,交
的延长线于点
,连接
交
于点
.
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/f66e801850d44b14b024e1fbefbe08d4.png)
(1)求证:
是
的切线;
(2)若
,求
的长.
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/a6e64297d1394694a227877a1208198c.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/036699b275cf4b2681a10427f385e9e5.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/79bf9c6c2d0d420ebadab6a80cc02d68.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/c7c4decd34864e0d8ac00f9de40ed07f.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/1468fdc19cfc4e0081099bdf49006457.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/c7c4decd34864e0d8ac00f9de40ed07f.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/786f556e09294ec9bede320439dd66c4.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/d9bd6acd1fb24955aff724c8cd9194a1.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/d9bd6acd1fb24955aff724c8cd9194a1.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/bbe9b706b899459dac6cad703b7f532d.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/7372113116ae4ed0a9965cf63e84599b.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/30ed584307974fefb3a07f0ff573275d.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/e7ef2282c4ee4b15b58317a87fa1c112.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/f66e801850d44b14b024e1fbefbe08d4.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/786f556e09294ec9bede320439dd66c4.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/79bf9c6c2d0d420ebadab6a80cc02d68.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/e180c82559414f3586639f5ce7a789a1.png)
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773761467219968/1773761467580416/STEM/30ed584307974fefb3a07f0ff573275d.png)
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