在如图所示的方格纸中,每个小正方形的边长为1,每个小正方形的顶点都叫做格点.(请利用网格作图,画出的线请用铅笔描粗描黑)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/16/537d011a-fc36-49cb-9d91-0085f190d9bf.png?resizew=176)
(1)过点C画
的垂线,并标出垂线所过格点E;
(2)过点C画
的平行线
,并标出平行线所过格点F;
(3)连接
,则三角形
的面积为 .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/16/537d011a-fc36-49cb-9d91-0085f190d9bf.png?resizew=176)
(1)过点C画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)过点C画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6d50515fc65885d44cd6a3c41e6a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
更新时间:2023-05-08 09:56:45
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相似题推荐
解答题-作图题
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适中
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【推荐1】我们已经学习过平行四边形的知识,借助平行四边形的相关性质、判定定理,我们研究学习了三角形的中位线的定义和性质.根据研究图形的规律,请回答以下问题:
![](https://img.xkw.com/dksih/QBM/2022/6/5/2994692410580992/3072676279107584/STEM/b0150c8f6bdb4e6e8a148f4b75561c2d.png?resizew=156)
(1)三角形中位线定理是:__________________________________________
(2)梯形也是一种常见的四边形,它是有一组对边平行,另一组对边不平行的四边形,连接梯形两腰的中点,得到的线段叫做梯形的中位线.
①请在图中画出梯形的中位线;(请在答题卡上画出此梯形后,画出梯形中位线)
②通过观察、度量、猜想梯形中位线具有的性质并证明.
猜想:梯形的中位线________________.(请在答题卡上把这句话写全)
已知:
求证:
证明:
(3)已知梯形的中位线长6,梯形的高为3,则梯形面积是________________.
![](https://img.xkw.com/dksih/QBM/2022/6/5/2994692410580992/3072676279107584/STEM/b0150c8f6bdb4e6e8a148f4b75561c2d.png?resizew=156)
(1)三角形中位线定理是:__________________________________________
(2)梯形也是一种常见的四边形,它是有一组对边平行,另一组对边不平行的四边形,连接梯形两腰的中点,得到的线段叫做梯形的中位线.
①请在图中画出梯形的中位线;(请在答题卡上画出此梯形后,画出梯形中位线)
②通过观察、度量、猜想梯形中位线具有的性质并证明.
猜想:梯形的中位线________________.(请在答题卡上把这句话写全)
已知:
求证:
证明:
(3)已知梯形的中位线长6,梯形的高为3,则梯形面积是________________.
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解答题-作图题
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名校
【推荐2】按下列要求画图并填空:
(1)过点B画出直线AC的垂线,交直线AC于点D,那么点B到直线AC的距离是线段 的长.
(2)用直尺和圆规作出∠ACB的平分线,若角平分线上有一点P到边AC的距离是3cm,通过你的测量,点P到边BC的距离是 cm(保留作图痕迹).
(1)过点B画出直线AC的垂线,交直线AC于点D,那么点B到直线AC的距离是线段 的长.
(2)用直尺和圆规作出∠ACB的平分线,若角平分线上有一点P到边AC的距离是3cm,通过你的测量,点P到边BC的距离是 cm(保留作图痕迹).
![](https://img.xkw.com/dksih/QBM/2019/5/18/2206171535523840/2266533923454976/STEM/03e1028c3f70442a9d1c374011131303.png?resizew=324)
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解答题-问答题
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【推荐1】如图,根据要求填空.
![](https://img.xkw.com/dksih/QBM/2019/2/16/2141925880668160/2148175466299392/STEM/ecd6fa5696ac44339fc9b6073af6e679.png?resizew=114)
(1)过A作AE∥BC,交______于点E;
(2)过B作BF∥AD,交______于点F;
(3)过C作CG∥AD,交__________于点G;
(4)过D作DH∥BC,交BA的__________于点H.
![](https://img.xkw.com/dksih/QBM/2019/2/16/2141925880668160/2148175466299392/STEM/ecd6fa5696ac44339fc9b6073af6e679.png?resizew=114)
(1)过A作AE∥BC,交______于点E;
(2)过B作BF∥AD,交______于点F;
(3)过C作CG∥AD,交__________于点G;
(4)过D作DH∥BC,交BA的__________于点H.
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解答题-作图题
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名校
【推荐2】如图,每个小正方形的边长为1,利用网格点画图和无刻度的直尺画图(保留画图痕迹):
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/224ada6a-c348-4184-9fcc-2e0460068e66.png?resizew=334)
(I)在方格纸内将三角形
经过一次平移后得到三角形
,图中标出了点
的对应点
,画出三角形
;
(2)过点
画线段
使
且
;
(3)图中
与
的关系是______;
(4)点
在线段
上,
,点
是直线
上一动点线段
的最小值为______.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/224ada6a-c348-4184-9fcc-2e0460068e66.png?resizew=334)
(I)在方格纸内将三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1264a2e3609e1c274acb89b5ea5019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1264a2e3609e1c274acb89b5ea5019.png)
(2)过点
![](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/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d2530e7023b2345c651e8f53629ff1.png)
(3)图中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a7bdf7e08e931ba7df81d0e88c43596.png)
(4)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adaead91b4b6febfcdd6f995d81e550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
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解答题-作图题
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适中
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【推荐1】△ABC在平面直角坐标系中的位置如图所示,点
,点
,点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/a5e132b7-b8f5-4fda-85af-1eb4f1dbf234.png?resizew=228)
(1)画出
关于
轴对称的
, 并写出点
的坐标;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90af6d0ace100d3000b4e998d8787e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02af485e17e7628fd5a3ace6e0a32ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e5017ad0c46f440c0c24f7cfa0cae82.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/a5e132b7-b8f5-4fda-85af-1eb4f1dbf234.png?resizew=228)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
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解答题-作图题
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【推荐2】在平面直角坐标系
中,已知
是由
经过平移得到的,它们各顶点的坐标如表所示:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/402b20c0-e33f-41fd-97ee-567bbdb67e76.png?resizew=150)
(1)填空:
_______,
_________;
(2)在平面直角坐标系中画出
﹔
(3)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() |
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/402b20c0-e33f-41fd-97ee-567bbdb67e76.png?resizew=150)
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
(2)在平面直角坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
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解答题-作图题
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【推荐1】(1)如图,A、B两点分别位于一个池塘的两端,小聪想要测量A、B间的距离,一位同学帮他想了一个办法:先在地上取一个可以直接到达A、B的点O,分别延长
、
至点M、N,使得
,再连接
,则
的长度即为池塘A、B间的距离.请说明理由.
(2)在下面的网格图中有三个点A、B、D,其中点A和点D在网格线的交点处,点B在网格线上,请找出点C,使得四边形
是平行四边形.(仅用无刻度的直尺作图,保留作图痕迹,不需说明理由)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f13f77f3173e308e3d6584daa5d7d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/4/e81f5e66-f660-41e9-9d46-1f34e77e77f0.png?resizew=116)
(2)在下面的网格图中有三个点A、B、D,其中点A和点D在网格线的交点处,点B在网格线上,请找出点C,使得四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/4/dc71bd8b-e687-4d4a-aeef-dbece572f1a2.png?resizew=178)
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解答题-作图题
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适中
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【推荐2】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)
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