历届高考直线与圆试题汇编

专题九解析几何第二十五讲直线与圆y20yP1．)xxA，B(x2)y2ABP22．．．[D．21y3t,x2y2x0xC(t222t2B△．dP)当，mdx201234x2y2ab新课标Ⅲ）已知椭圆C：A，A，2ab21220AA2C1632．1．3．．3331AD2，BDAB点PC．2253B．D2(y(x3)(y2)1225335322354454334或．或．或．或．2xy10xy5222xy502xy50或．第1页—共9页2xy502xy50或．．2xy502xy50或2xy502xy50或．BCA，，yM、N=MN6628410(aR)Cxy4x2y10：x(a)：22＝CB42210D．2．6(x,1)O:xy=1°，点M220则x0．1122，12，．．．2222y3410xyx22lly20xy20xy30xy30．．x．．0Am，Bmm，:x3y41C22CPm．7．6．54．:xy1C:xy6x8ym0mC22221221．．911．．（3,）y1lPlx22第2页—共9页[0，]6[0，]3，]，]．．．．6322020yaxyx2y2xa24C68Rx0BmAym30P(x,y)||||．[．[．[．,BAxyAB2xy40CC4352．．．．54418，1y1Ax222xy304xy302xy304xy30．．．．:x2y31C:x3y49,，MNC222212,CP为xC12．524171．62217．．2y550240xyxx2y246．1A24B1,0C0,1(ABC线yba；；b21,21,11,．．1．1．222332(a,b)O:xy1,1O22M第3页—共9页(1)510x2y2axy则a11．12．22yx1xy122y20y10xy10．x．x．．xy20:y4xC||Fl过FCA，B两2l33x1yx1或y(x1)y或(x1)(x1)．y．3322y3(x1)或y3(x1)．y(x1)y或．22Ra1l2y10a：l：12x(a1)y40Rxn(1)+(1)2=0(1)+(y1)=1x相nmym22m+n．[13,1+3]．[222,2+22]．(,13][1+3,+)D．(,222][2+22,+)P(1,1)xyxy(,)|22y20y10xy0x3y40．．x．．第4页—共9页天津）在平面直角坐标系xOy中，直线3x4y50,BABxy422．33．23．．Cy=x2C432D1y2x0C()0：yymxmC：x2212m3333([，，)]((，)33333333，+))(33334xy2yx=0x+y+x=0x+yx=0x+y2x=0．2．x．2．2222225Oyx2y0xO(xy5(xy5．22．22(x5)y5(x5)y5．22．22:y2x34．)AlBABClDABCDA0．(B：2Oxy50P2PB≤20PAP．C与xT(1,0)y,BB在A第5页—共9页2．C；O:xy1,A22MNNAMANBMBNBMANAMBNBMA22．NAMB①；②2；③.230((4截xOyxyx2y2．y20x1ya4，BC22a．l：y和l：2yxbC:xy1xa221b2．a22y0y山东）圆心在直线xC与C截x23C．C)．yCxya0Cxy2x4y4042x22B．aO:xy1(2,0)，若定点B(b,0)(b2)22OM|MB|MA|b；第6页—共9页.y2x3xy6x8y022πO：xy5l：cossin1(0O上22xy21.lkk(y2)4yxx.22x2y502x60m．CxC．y20x．Cxy0BC为．y2x150线BxAlx22lA于C，DB作ADE.E（ECl交C于M，NBl11AP，Q如图，为了保护河上古桥OAMO和A．点AO点CO，4．3第7页—共9页0,3AlyxC：24xOyl.ylAx