(1)如图①,所有小正方形的边长都为
,点
、
、
均在格点上,用直尺画图:
①过点
画![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ae9bac6551dcb992ba57f6e315f667.png)
②过点
画
,垂足为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/d61ca911-cfc2-45e6-8d19-28df0713a834.png?resizew=156)
(2)在图①中,线段______的长度表示点
到
的距离;
(3)已知:
,
,利用直尺和圆规作图在图②中直线
的上方作射线
,使
(不写作法,保留作图痕迹.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ae9bac6551dcb992ba57f6e315f667.png)
②过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c22f88e400d765d6b0606cf422432f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/d61ca911-cfc2-45e6-8d19-28df0713a834.png?resizew=156)
(2)在图①中,线段______的长度表示点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
(3)已知:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7223d437dd2ce0ea76521228b00ed4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09806b05738fd962770872f9a82aa575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62de69363d4559d27033326848704ecf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/e950aba7-9f8c-4c7f-8709-dc3333f316d6.png?resizew=256)
22-23七年级上·江苏南京·期末 查看更多[2]
更新时间:2023-03-11 16:56:22
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相似题推荐
解答题-计算题
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解题方法
【推荐1】提出问题:已知平面直角坐标系内,任意一点A,到另外一个点B之间的距离是度多少?
问题解决:
(1)遇到这种问题,我们可以先从特例入手,最后推理得出结论
探究一:点A(1,﹣1)到B(﹣1,﹣1)的距离d1= ,
探究二:点A(2,﹣2)到B(﹣1,﹣1)的距离d1= ,
一般规律:
如图1,在平面直角坐标系xoy内已知A(x1,y1)、B(x2,y2),我们可以表示连接AB,在构造直角三角形,使两条边交于M,且∠M=90°,此时AM= ,BM= ,AB= .
![](https://img.xkw.com/dksih/QBM/2021/11/3/2843122612125696/2844060521144320/STEM/a95be408-e347-46f1-8432-5706e3da3b0c.png?resizew=468)
材料补充:已知点P(x0,y0)到直线y=kx+b的距离d2可用公式d2=
计算.
问题解决:
(2)已知互相平行的直线y=x﹣2与y=x+b之间的距离是3
,试求b的值.
拓展延伸:
拓展一:已知点M(﹣1,3)与直线y=2x上一点N的距离是3,则△OMN的面积是 .
拓展二:如图2,已知直线y=
分别交x,y轴于A,B两点,⊙C是以C(2,2)为圆心,2为半径的圆,P为⊙C上的动点,试求△PAB面积的最大值.
问题解决:
(1)遇到这种问题,我们可以先从特例入手,最后推理得出结论
探究一:点A(1,﹣1)到B(﹣1,﹣1)的距离d1= ,
探究二:点A(2,﹣2)到B(﹣1,﹣1)的距离d1= ,
一般规律:
如图1,在平面直角坐标系xoy内已知A(x1,y1)、B(x2,y2),我们可以表示连接AB,在构造直角三角形,使两条边交于M,且∠M=90°,此时AM= ,BM= ,AB= .
![](https://img.xkw.com/dksih/QBM/2021/11/3/2843122612125696/2844060521144320/STEM/a95be408-e347-46f1-8432-5706e3da3b0c.png?resizew=468)
材料补充:已知点P(x0,y0)到直线y=kx+b的距离d2可用公式d2=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b86cd15f64e28a2d440712312e3158a.png)
问题解决:
(2)已知互相平行的直线y=x﹣2与y=x+b之间的距离是3
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
拓展延伸:
拓展一:已知点M(﹣1,3)与直线y=2x上一点N的距离是3,则△OMN的面积是 .
拓展二:如图2,已知直线y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1766790d350df38aa14879e09da42a.png)
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真题
【推荐2】在平面直角坐标系中,给出如下定义:
为图形
上任意一点,如果点
到直线
的距离等于图形
上任意两点距离的最大值时,那么点
称为直线
的“伴随点”.
例如:如图1,已知点
,
,
在线段
上,则点
是直线
:
轴的“伴随点”.
(1)如图2,已知点
,
,
是线段
上一点,直线
过
,
两点,当点
是直线
的“伴随点”时,求点
的坐标;
(2)如图3,
轴上方有一等边三角形
,
轴,顶点A在
轴上且在
上方,
,点
是
上一点,且点
是直线
:
轴的“伴随点”.当点
到
轴的距离最小时,求等边三角形
的边长;
(3)如图4,以
,
,
为顶点的正方形
上始终存在点
,使得点
是直线
:
的“伴随点”.请直接写出
的取值范围.
![](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/49b50357a6545cae8348e3059312f520.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/49b50357a6545cae8348e3059312f520.png)
例如:如图1,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e5eea5f7f98ca8632358b7e49ceb25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2007972af3341f27fbc32ce62dfce5e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/30/235f620d-8fb6-4b10-a802-04b07d7ca365.png?resizew=550)
(1)如图2,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad434a7febc9d1491e73f51b86cd588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf77dad105b2686980eabe19b4e752a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05de5eef286a1b48012246c0cf88a1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cea7f618fa4919e4fcca69ed5958e99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(3)如图4,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f0ee968f9a247871a54e505fbd111b.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9bd144e0e96e4236a14523e0729cacb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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解答题-作图题
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较难
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【推荐1】如图,平行四边形ABCD中,对角线AC,BD相交于O点.
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987925789646848/2989911419273216/STEM/fe41a90052f04fe384141141fd824bc1.png?resizew=183)
(1)在以点A,B,C,D中的两点分别为起点和终点的向量中,写出一对相等的向量;
(2)在以点A,B,C,O中的两点分别为起点和终点的向量中,写出一对互为相反的向量;
(3)求作:
+
,(不写作法,保留作图痕迹,写出结果).
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987925789646848/2989911419273216/STEM/fe41a90052f04fe384141141fd824bc1.png?resizew=183)
(1)在以点A,B,C,D中的两点分别为起点和终点的向量中,写出一对相等的向量;
(2)在以点A,B,C,O中的两点分别为起点和终点的向量中,写出一对互为相反的向量;
(3)求作:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfde0038de382d2be9701cea23ef7eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329fdf7d989f77a32ca9e0361a9cc956.png)
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解答题-作图题
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【推荐2】已知如图,E、F分别在四边形ABCD边AB、BC上,在CD上求作一点P,使
.(不写作法,保留作图痕迹)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172da1fc81c4a2688c9f63aca0bf1f36.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/55c93822-a1ff-4dbf-bf66-77362168b179.png?resizew=223)
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解答题-问答题
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【推荐1】如图在网格中,每个小正方形的边长均为1,小正方形的顶点称为格点,A、B、C、D、M、N、K均为格点.仅用无刻度的直尺在给定网格中完成画图,并回答问题.
①过点D画
的平行线
(E为格点);
②过点B画
的垂线
,交
于点F,交
于点G,连接
.
【发现】在图1中,
与
的数量关系是__________;
的长度是__________.
【应用】在图2中,点P是边
上一点,在
上找出点H,使
.
①过点D画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
②过点B画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
【发现】在图1中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
【应用】在图2中,点P是边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f954a8da05cc9144d4bf86f88e236a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c11e16cd8e4c1e6ef4ba395a3229de0f.png)
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解答题-作图题
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【推荐2】如图,在每个小正方形边长为1的方格纸内将△ABC经过一次平移后得到△A′B′C′,图中标出了点B的对应点B′.
![](https://img.xkw.com/dksih/QBM/2022/4/29/2968755216711680/2971392214171648/STEM/e0b62e8a-3399-471a-9c51-1e62ee14e31e.png?resizew=235)
根据下列条件,利用格点和三角尺画图:
(1)补全△A′B′C′;
(2)请在AC边上找一点D,使得线段BD平分△ABC的面积,在图上作出线段BD;
(3)利用格点在图中画出AC边上的高线BE;
(4)找△ABF(要求各顶点在格点上,F不与点C重合),使其面积等于△ABC的面积.满足这样条件的点F共_______个.
![](https://img.xkw.com/dksih/QBM/2022/4/29/2968755216711680/2971392214171648/STEM/e0b62e8a-3399-471a-9c51-1e62ee14e31e.png?resizew=235)
根据下列条件,利用格点和三角尺画图:
(1)补全△A′B′C′;
(2)请在AC边上找一点D,使得线段BD平分△ABC的面积,在图上作出线段BD;
(3)利用格点在图中画出AC边上的高线BE;
(4)找△ABF(要求各顶点在格点上,F不与点C重合),使其面积等于△ABC的面积.满足这样条件的点F共_______个.
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