2022年平面直角坐标系单元试卷 .pdf
例 1.平面上有点P，P到坐标轴的距离均为正整数，若点 P到 x 轴、y 轴的距离之积为10，试写出符合条件的点的坐标例 2.将边长为1 的正方形ABCD放在直角坐标系中，使C的坐标为(21，21)请建立直角坐标系，并求其余各点的坐标例 3如果规定北偏东30的方向记作30，沿这个方向行走50 米记作 50，图中点 A 记作(30，50)，北偏西 45记作 45，沿着该方向的反方向走20 米记作 20，图中点 B记作(45，20)问：(1)(75，15)，(10，25)分别表示什么意义?(2)在图中标出点(60，30)和(30，40)例 4A的坐标是)2,2(，点C的坐标)1,2(，将点A向右平移3 个单位得到点B.（1）求 B、C两点的距离.（2）请在如图所示的直角坐标平面内，标出点B的位置，并写出点B的坐标.（3）判断ABC的形状.（4）若保持点C、点B的位置不变，允许点A的坐标发生变化，在如图所示的直角坐标平面内，你是否还能够找到其他的点，使ABC具备题（3）所判断出的形状，直接写出点A的坐标6 5 4 3 2 1 O 1-6 2 3 4 5 6 x y-5-4-3-2-1-1-2-3-4-5-6 AC8642-2-4-6-8-5510 xyO巩固训练1.如图，在ABC中，已知AB=AC=2，点A的坐标是(1,0)，点B、C在y轴上（1）求点 B、C的坐标；（2）试判断在x轴上是否存在点P，使PAB、PAC和PBC都是等腰三角形 如果存在这样的点P有几个？写出点P的坐标；如果不存在，请说明理由2.已知点A的坐标是（3，0），点B的坐标是（1，0），ABC是等腰三角形，且一边上的高为 4，写出所有满足条件的点C的坐标3.在直角坐标平面内，已知点A（0，5）和点B（2,4）,BC=4,且 BC/x轴（1）在图中画点C的位置,并写出点C的坐标；（2）联结AB、AC、BC，判断ABC的形状，并求出它的面积x y O 1 B C A-1-1 1 文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1例 5点 A（1a，2b）与点 B（4，2）关于原点对称，则点C（a，b）到y轴的距离为。例 6点 P（22m，m）在第四象限的角平分线上，则点（m，1m）关于y轴的对称点坐标是。1.已知点M（3，2）与点M（x，y）在同一条平行于x轴的直线上，且M到y轴的距离等于4，那么点M的坐标是（）A、（4，2）或（4，2）B、（4，2）或（4，2）C、（4，2）或（5，2）D、（4，2）或（1，2）2、已知，如果，那么点（）A、关于原点对称 B、关于轴对称C、关于轴对称D、关于过点的直线对称例 7、如图，梯形中，点在轴上，点在轴上，求点的坐标和的长.练习：点，点,点在轴上，如果的面积为15，求点的坐标.文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1三课后练习一、选择题：1、如果点P既在x轴下方，又在y轴右侧，且距x轴、y轴的距离分别是a2、a3，那么点 P的坐标是（）A、（a2，a3）B、（a3，a2）C、（a2，a3）D、（a3，a2）2、已知点P（42a，27a）在第二象限的角平分线上，则a等于（）A、3 B、3 或 1 C、1 D、3213、如图，将ABCD对角线交点与直角坐标系的原点重合，点 A与点 B的坐标分别是（2，1），（21，1），则点 C和点 D的坐标分别为（）A、（2，1）和（21，1）B、（2，1）和（21，1）C、（2，1）和（21，1）D、（1，2）和（1，21）4、矩形中，三点的坐标分别是点的坐标是（）A、B、C、D、5、如果点在第一象限，那么点在（）A、第四象限B、第三象限C、第二象限D、第一象限6、直角坐标系中有一点，其中，则点的位置在（）A、原点B、轴上 C、轴上 D、坐标轴上7、直角坐标系中，点在第二象限，且到轴、轴距离分别为3，则点坐标为（）A、B、C、D、二、填空题：1、若点（24a，1a）在y轴负半轴上，则a。2、已知点P（93a，a1）是第三象限的点，且横、纵坐标均为整数，若P、Q 关于原点对称，则Q点坐标是。文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R13、已知点P1（1a，5）和点 P2（2，1b）关于x轴对称，则2003)(ba。4、线段 AB3，且 AB x 轴，若点A 的坐标为(4、2)，则 B点的坐标是5、(1)坐标平面内的点与_是一 一对应的；(2)点到点的距离是 _；(3)点到原点的距离是_；(4)点在_上；(5)点在第二、第四象限坐标轴夹角平分线上，那么=_；(6)设点的坐标为，则点在第 _象限；(7)已知点且轴，则 _，_ (8)点是第二象限内的点，则的取值范围是_(9)以点为圆心，5 为半径的圆与轴的两个交点分别为_，与轴的两个交点分别为 _.6、如图，相交于点P（5，5）的互相垂直的直线1l和2l与x轴和y轴相交于点A和 B，则四边形 OAPB 的面积是。三、解答题：1、已知如图，矩形AOBC，以 O为坐标原点，OB、OA分别在x轴、y轴上，点 A的坐标为（0，3），OAB 600，以 AB为轴对折后，使C点落在 D点处，求D点坐标。1l2lyxPBAO文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R12、如果规定北偏东30的方向记作30，沿这个方向行走50 米记作 50，图中点 A 记作(30，50)，南偏东45记作 45，沿着该方向走20 米记作 20，图中点B 记作(45，20)问：(1)(75，15)，(10，25)分别表示什么意义?(2)在图中标出点(60，30)和(30，40)3、如图，在矩形ABCD中，AB4，BC 3，将矩形ABCD置于直角坐标系中，使点A与坐标系的原点重合，AB与x轴正方向成300的角，求点B、C的坐标。例 4 图yx030EFHGDCBAAO（P）问题图yxCBA探索与创新：A、B两村在河边的同旁，以河边为x轴建立直角坐标系，则A、B两村对应的坐标分别是 A（1，1），B（3，3）。现要在河边P 点处修建一个水泵站，分别向A、B 两村送水，P点选择在什么地方，才可使所用的水管最短？试求出P点的坐标及所需水管的长度。文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1例 1 写出图中 A，B，C，D 各点的坐标（图13-5）例 2 已知点 P到 x 轴的距离为2，到 y 轴的距离为3，则点 P的坐标为 _。例 3 若点 P（x,y）在第二象限，且2|1x|，5|3y|，则点 P的坐标为（）A.（1，2）B.（3，8）C.（2，1）D.（8，3）例 4已知点 P是已知某一条直线上的点，这条直线平行于x轴，而且到 x 轴的距离是4，点 P到 y 轴的距离是3，则满足以上条件的点的P的个数为（）A.5 B.4 C.3 D.2 例 5 如图，菱形中，求点的坐标和的长.例 6 直角坐标系中，正三角形的一个顶点的坐标是（0，3），另两个顶点B、C都在x 轴上，求B，C的坐标。文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1文档编码:CN7K8J4X3G10 HD7Y6N10L8V9 ZE1D6P2P1R1例 7、如图，如果用(0，0)表示点 A，用(1，2)表示点 B那么:(1)图 C、D、E分别如何表示；(2)在图中标出点F(2，1)，G(一 1，2)基础训练:1.填空题:(1)已知点 A（m，n）在第四象限，那么点B（n，m）在第象限(2)若点 P(3a-9,1-a)是第三象限的整数点(横、纵坐标都
