首页
登录
职称英语
In the coordinate plane, points A and B are endpoints of a diameter of a circle
In the coordinate plane, points A and B are endpoints of a diameter of a circle
游客
2024-01-12
64
管理
问题
In the coordinate plane, points A and B are endpoints of a diameter of a circle with center ( -2,1). If the coordinates of A are ( -5,5) , what are the coordinates of B?
选项
A、(0,0)
B、(3,-2)
C、(3,-1)
D、(2,-2)
E、(1,-3)
答案
E
解析
在坐标平面上,A和B两点是以(-2,1)为圆心的直径的端点(endpoint)。若A点坐标为(-5,5),那么B点的坐标是多少?
解:本题的正确答案为(E)。设圆心坐标(X0,Y0),因为圆心是A和B中点,所以由平面内任两点中点的坐标公式可得:XA+XB=2 X0,YA+YB=2 Y0。代入圆心与B点坐标,可求得B点坐标为(1,-3)。
转载请注明原文地址:http://tihaiku.com/zcyy/3356864.html
相关试题推荐
Ibelieveyouhave______someimportantpointsinthereport.A、leftaloneB、lef
________itornot,hisdiscoveryhascreatedastirinscientificcircles.A、Bel
Inthefigureabove,x=2.WhatistheareaofcircleO?[img]2011q3/ct_egmatqj_eg
Iftheareaofacircleis81π,thenthediameterofthecircleisA、9B、18C、36
Inacertaingame,eachplayerscoreseither2pointsor5points.Ifnplayers
Inthecoordinateplane,pointsBandCareendpointsofadiameterofcirclewi
P(x,y)isthemidpointofAB?(notshownabove),thenwhatarethecoordinatesof
Inthestandard(x,y)coordinateplane,whatistheslopeofthelinecontaining
[img]2022m10x/ct_ve01204002j_0048_221018[/img]Inthefigureabove,pointsA,B,
Thesurfacedistancebetween2pointsonthesurfaceofacubeisthelengthof
随机试题
Solvingaproblemcanbebrokendownintoseveralsteps.First,theproblem
[originaltext]Hello,Jane.Nicetomeetyou![/originaltext][originaltext]What
[originaltext]M:Doyouwantthesamecutaslasttime?W:Thesameontop,but
AcademicFreedomreferstotherightofteachersandresearchers,particular
圈梁必须是封闭的,当砌体房屋的圈梁被门窗洞口截断时,应在洞口上部增设相同截面的附
女性,57岁。无痛性血尿4个月。体格检查无阳性体征。B超检查:右肾轻度积水,尿脱
下列关于培训的目标说法正确的有()A:培训的目标应解决员工培训要达到什么样标准的
Whatisthemaintopicoftheseminar?
藿香正气水既能理气和中,又能A.发汗解表 B.疏风清热 C.解表化湿 D.
某进口设备采用装运港船上交货价(FOB),该设备的到岸价除货价外还应包括()。
最新回复
(
0
)