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1、2011 年中考复习（28）直线与圆的位置关系一、选择题1、下列直线，是圆的切线的是（）A.经过半径外端的直线B.垂直于半径的直线C.与圆有一个公共点的直线D.圆心到它的距离等于这个圆的半径长的直线2、已知 O 的半径 r，圆心 O 到直线 l 的距离为d，当 dr 时，直线 l 与 O 的位置关系是（）A相交B相切C相离D以上都不对3、已知圆O 的半径为 R，AB 是圆 O 的直径，D 是 AB 延长线上一点，DC 是圆 O 的切线，C是切点，连结AC，若 CAB 30，则 BD 的长为（）A2RB3RCRD32R3 题图4 题图5 题图4、如图 PA、PB 是 O 的切点，AC 是 O 的
2、直径，P40，则 BAC 得度数是（）A.10 B.20 C.30 D.40 5、如图，在平面直角坐标系中，A 与 y 轴相切于原点O，平行于x 轴的直线交 A 于 M、M两点，若点M 的坐标是（-4,-2），则点N 的坐标为（）A（-1,-2）B（1,2）C（-1.5,-2）D（1.5,-2）6、如图，AB 是 O 的直径，O 交 BC 的中点于D,DE AC 于 E,连接 AD,则下列结论正确的个数是(）AD BC EDA B OA12AC DE 是 O 的切线A1 个B2 个C3 个D4 个7、如图，点P 是 O 的直径 BA 延长线上一点，PC 与 O 相切于点 C，CDAB，垂足为
3、D，连结 AC、BC、OC，那么下列结论中：PC2=PAPB；PCOC=OPCD；OA2=ODOP正确的有（A）0 个（B）1 个（C）2 个（D）3 个6 题图7 题图8 题图8、如图，AB 是 O 的直径，AD 是 O 的切线，点C 在 O 上，BCOD，AB 2,OD3,则 BC 的长为（）A23B32C32D229、如图，已知O是以数轴的原点O为圆心，半径为1 的圆，45AOB,点P在数轴上运动，若过点P且与 OA平行的直线与O有公共点,设xOP，则x的取值范围是A 1x 1 B2x2C 0 x2Dx2二、填空题1、如图，MAB 30，P 为 AB 上的点，且 AP6，圆 P与 AM
4、相切，则圆 P 的半径为1 题图2 题图3 题图2、如图，已知AB 是 O 的直径，PB 是 O 的切线，PA 交 O 于 C，AB 3cm，PB4cm，则BC.3、如图，PA、PB分别切O于点A、B，点E是O上一点，且60AEB，则P_度4、如图，以O 为圆心的两个同心圆中，大圆的弦AB 与小圆相切于点C，若大圆半径为10cm，小圆半径为6cm，则弦 AB 的长为cm4 题图5 题图6 题图5、如图，60ACB，半径为1cm 的O切BC于点C，若将O在CB上向右滚动，则当P A O B 第 9 题文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:
5、CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码
6、:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编
7、码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档
8、编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文
9、档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3
10、文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J
11、3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3滚动到O与CA也相切时，圆心O移动的水平距离是_cm6、如图，DB 为半圆的直径，A 为 BD 延长线上一点，AC 切半圆于点E，BCAC 于点 C，交半圆于点 F已知
12、 BD 2，设 AD x，CFy，则 y 关于 x 的函数解析式是7、如图，AB 与 O 相切于点B，线段 OA 与弦 BC 垂直于点 D，AOB 60，BC 4cm，则切线 AB cm.第 19题图ABCDO7 题图8 题图9 题图8、如图，直线AB 切 O 于 C 点，D 是 O 上一点，EDC30o，弦 EFAB，连结 OC 交 EF于 H 点，连结CF，且 CF2，则 HE 的长为 _9、如图，点 A、B、C 在 O 上，切线CD 与 OB 的延长线交于点D，若 A30，CD32，则 O 的半径长为10、如图，PA、PB 分别与 O 相切于点A、B，O 的切线 EF 分别交 PA、PB
13、 于点 E、F，切点 C 在?AB 上，若 PA 长为 2，则 PEF 的周长是?ABPCEF?O10 题图11 题图12 题图11、如图AB、AC是O的两条弦，A30，过点C的切线与OB的延长线交于点D，则D的度数为12、RtABC 中，9068CACBC，则 ABC 的内切圆半径r_三、解答题1、如图 AB 为 O直径 C为 O上一点，AD 和过 C点的切线互相垂直，垂足为D，求证：AC平分DAB。文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2
14、C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S
15、2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10
16、S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ1
17、0S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ
18、10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:C
19、J10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:
20、CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J32、已知：AB是 O的直径，BC是 O的切线，切点为B，OC平行于弦 AD，求证：DC是 O的切线。3、如图，AB是 O的直径，BAC=30，M是 OA上一点，过M作 AB的垂线交AC于点 N，交 BC的延长线于点E，直线 CF交 EN于点 F，且 ECF=E.（1
21、）证明 CF是 O的切线；（2）设 O的半径为1，且 AC=CE，求 MO的长.4、如图，O的半径OD经过弦AB(不是直径)的中点C，过AB的延长线上一点P作O的切线PE，E为切点，PEOD；延长直径AG交PE于点H；直线DG交OE于点F，交PE于点K（1）求证：四边形OCPE是矩形；（2）求证：HKHG；（3）若EF2，FO1，求KE的长PEDKHGCABFO文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 Z
22、H8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7
23、ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7
24、 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U
25、7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10
26、U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K1
27、0U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K
28、10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J35、如图，已知：C 是以 AB 为直径的半圆O 上一点，CHAB 于点 H，直线 AC 与过 B 点的切线相交于点D，E 为 CH 中点，连接AE 并延长交BD 于点 F，直线 CF 交直线 AB 于点 G.（1）求证：点F是 BD 中点；（2）求证：CG 是 O 的切线；（3）若 FB=FE=2，求 O
29、的半径6、已知：ABC是等腰三角形，O是底边BC的中点，O与腰 AB相切于点D，求证：AC与 O相切OBCAD7、如图，AB是半圆O的直径，过点O作弦AD的垂线交半圆O于点E，交AC于点C，使BEDC（1）判断直线AC与圆O的位置关系，并证明你的结论；（2）若8AC，4cos5BED，求AD的长C A O B E D 文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2
30、C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S
31、2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10
32、S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ1
33、0S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ
34、10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:C
35、J10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:
36、CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J38、已知，如图，直线MN 交 O 于 A,B 两点，AC 是直径，AD 平分CAM 交 O 于 D，过 D 作DEMN 于 E（1）求证：DE 是 O 的切线；（2）若6DEcm，3AEcm，求 O 的半径.9、如图，BD 是 O 的直径，OAOB，M 是劣弧 AB上一点，过点M 点作 O 的切线 MP 交 OA的延长线于P 点，MD 与 OA 交于
37、 N 点（1）求证：PM PN；（2）若 BD4，PA32AO，过点 B 作 BCMP 交 O 于 C 点，求 BC 的长C O B A D M E N 文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ1
38、0S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ
39、10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:C
40、J10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:
41、CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码
42、:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编
43、码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3文档编码:CJ10S2C7F7Q6 HL8G1C5K10U7 ZH8B9H10Y2J3