(完整word版)北师大9年初三圆中考练习题及答案.pdf

圆命题点 1圆周角定理及其推论1.(2016 兰州)如图，在 O 中，点 C 是AB的中点，A50，则 BOC()A.40B.45 C.50 D.60第 1 题图2.(2016 济宁)如图，在 O 中，ABAC，AOB 40，则 ADC 的度数是()第 2 题图A.40B.30 C.20D.153.(2016 永州)如图，在 O 中，A，B 是圆上的两点，已知 AOB 40，直径 CDAB，连接 AC，则 BAC _度第 3 题图4.(2016 青岛)如图，AB 是 O 的直径，C，D 是 O 上的两点，若BCD 28，则ABD _.第 4 题图命题点 2垂径定理及其推论5.(2016 黄石)如图所示，O 的半径为13，弦 AB 的长度是24，ONAB，垂足为N，则 ON()A.5 B.7 C.9 D.11 第 5 题图6.(2016 眉山)如图，A、D 是 O 上的两个点，BC 是直径，若 D 32，则 OAC等于()第 6 题图A.64B.58C.72D.55 7.(2016 安顺)如图，AB 是 O 的直径，弦CDAB 于点 E，若 AB8，CD6，则BE_第 7 题图命题点 3与圆有关的位置关系8.(2016 湘西)在 RtABC 中，C90，BC3 cm，AC 4 cm，以点 C 为圆心，以2.5 cm 为半径画圆，则C 与直线 AB 的位置关系是()A.相交B.相切C.相离D.不能确定9.(2016 上海)如图，在RtABC 中，C90，AC 4，BC 7，点 D 在边 BC 上，CD3，A 的半径长为3，D 与 A 相交，且点B 在 D 外，那么 D 的半径长r 第 9 题图文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5的取值范围是()A.1 r4 B.2 r4 C.1 r8 D.2r8 命题点 4与切线有关的证明与计算10.(2016 泉州)如图，AB 和 O 相切于点B，AOB 60，则 A 的大小为()A.15B.30C.45D.60第 10 题图11.(2016 湖州)如图，圆O 是 RtABC 的外接圆，ACB 90，A25.过点 C 作圆 O 的切线，交AB 的延长线于点D，则 D 的度数是()第 11 题图A.25 B.40 C.50 D.65 12.(2016 呼和浩特)在周长为26的 O 中，CD 是 O 的一条弦，AB 是 O 的切线，且 ABCD，若 AB 和 CD 之间的距离为18，则弦 CD 的长为 _13.(2015 宁波)如图，在矩形ABCD 中，AB 8，AD 12，过 A，D 两点的 O 与 BC边相切于点E.则 O 的半径为 _第 13 题图14.(2016 大连 10 分)如图，AB 是 O 的直径，点C、D 在 O 上，A2BCD，点E 在 AB 的延长线上，AED ABC.(1)求证：DE 与 O 相切；文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5(2)若 BF2，DF10，求 O 的半径第 14 题图命题点 5扇形的相关计算15.(2016 包头)120 的圆心角所对的弧长是6，则此弧所在圆的半径是()A.3 B.4 C.9 D.18 16.(2016 宜宾)半径为 6，圆心角为120 的扇形的面积是()A.3B.6C.9D.1217.(2016 湘潭)如图，一个扇形的圆心角为90，半径为2，则该扇形的弧长是_(结果保留)第 17 题图命题点 6圆锥的相关计算18.(2016 乌鲁木齐)将圆心角为90，面积为 4 cm2的扇形围成一个圆锥的侧面，则此圆锥的底面圆的半径为()A.1 cmB.2 cmC.3 cmD.4 cm19.(2016 孝感)若一个圆锥的底面圆半径为3 cm，其侧面展开图的圆心角为120，则圆锥的母线长是 _cm.20.(2016 淮安)若一个圆锥的底面圆的半径为2，母线长为6，则该圆锥侧面展开图的圆心角是 _.命题点 7阴影部分面积的计算21.(2016 重庆 A 卷)如图，以 AB 为直径，点 O 为圆心的半圆经过点C，若 AC BC2，则图中阴影部分的面积是()文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5A.4B.124C.2D.122第 21 题图22.(2016 资阳)如图，在RtABC 中，ACB 90，AC 2 3，以点B 为圆心，BC的长为半径作弧，交AB 于点 D，若点 D 为 AB 的中点，则阴影部分的面积是()第 22 题图A.2323B.4323C.2343D.2323.(2016 重庆 B 卷)如图，在边长为 6 的菱形 ABCD 中，DAB 60，以点 D 为圆心，菱形的高 DF 为半径画弧，交AD 于点 E，交 CD 于点 G，则图中阴影部分的面积是()A.1839B.183C.9392D.1833第 23 题图24.(2016 常德)如图，ABC 是 O 的内接正三角形，O 的半径为3，则图中阴影部分的面积是 _第 24 题图25.(2016 咸宁 8 分)如图，在 ABC 中，C90，BAC 的平分线交BC 于点 D，点O 在 AB 上，以点O 为圆心，OA 为半径的圆恰好经过点D，分别交AC，AB 于点 E、F.(1)试判断直线BC 与 O 的位置关系，并说明理由；文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5(2)若 BD 23，BF2，求阴影部分的面积(结果保留)第 25 题图命题点 8圆与正多边形的相关计算26.(2015 贵阳)如图，四边形ABCD 是 O 的内接正方形，若正方形的面积等于4，则O 的面积等于 _第 26 题图27.(2016 盐城)如图，正六边形ABCDEF 内接于半径为4 的圆，则 B、E 两点间的距离为 _第 27 题图中考冲刺集训(时间：60 分钟满分：70 分)一、选择题(共 8 题，每题3 分，共 24 分)1.(2016 无锡)如图，AB 是 O 的直径，AC 切 O 于 A，BC 交 O 于点 D，若 C70，则 AOD 的度数为()A.70B.35C 20D.40第 1 题图文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M52.(2016 德阳)如图，AP 为 O 的切线，P 为切点，若 A20，C、D 为圆周上两点，且 PDC60，则 OBC 等于()第 2 题图A.55B.65C.70D.753.(2016 衢州)如图，AB 是 O 的直径，C 是 O 上的点，过点C 作 O 的切线交AB的延长线于点E，若 A 30，则 sinE 的值为()第 3 题图A.12B.22C.32D.334.(2016 山西)如图，在?ABCD 中，AB 为 O 的直径，O 与 DC 相切于点E，与 AD相交于点F，已知 AB12，C 60，则 FE的长为()A.3B.2CD2第 4 题图5.(2016 聊城)如图，四边形ABCD 内接于 O，F 是CD上一点，且 DFBC，连接 CF并延长交 AD 的延长线于点E，连接 AC，若 ABC 105，BAC 25，则 E 的度数为()文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5文档编码:CD2J5H4P6V7 HZ9P1E3M9Q3 ZQ2V4X10Q8M5第 5 题图A.45B.50C.55D.606.(2016 广安)如图，AB 是圆 O 的直径，弦CDAB，BCD 30，CD43，则 S阴影()第 6 题图A.2B.83C.43D.387.(2016 陕西)如图，O 的半径为4，ABC 是 O 的内接三角形，连接OB、OC，若BAC 与 BOC 互补，则弦BC 的长为()A.33 B.43 C.53 D.63 第 7 题图8.(2016 南通)如图所示的扇形纸片半径为5 cm，用它围成一个圆锥的侧面，该圆锥的高是 4 cm，则该圆锥的底面周长是()第 8 题图A.3 cmB.4 cmC.5 cmD.6 cm二、填空题(共 4 题，每题4 分，共 16 分)9.(2016 广州)如图，以点O 为圆心的两个同心圆中，大圆的弦AB 是小圆的切线，点P为切点，AB 123，OP6，则劣弧 AB的长为 _(结果保留)文档编码:CD2J