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【331819】第二十四章 圆周周测3(24.2)

时间:2025-02-08 17:05:07 作者: 字数:3010字
简介:

第二十四章 二次函数周周测3

一、选择题

  1. 已知相交两圆的半径分別为47,则它们的圆心距可能是 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

  2. A. 2

    B. 3

    C. 6

    D. 11

  3. 已知 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的直径为 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 为直线l上一点, <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> ,那么直线l <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的公共点有 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

  4. A. 0

    B. 1

    C. 2

    D. 1个或2

  5.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
    图,圆与圆的位置关系没有 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

A. 相交
B. 相切
C. 内含
D. 外离



  1. 如图, <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>OB上一点,且 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> ,以点C <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
    圆心,半径为
    4的圆与OA的位置关系是 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

A. 相离
B.
相交
C.
相切
D.
相交或相切


  1.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
    图,
    AB <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的直径,AC <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 相切于点A,连接OC <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>D,作 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>E,连接AE,若 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> ,则 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 等于 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

A.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
B.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
C.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
D.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>


  1. 已知 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的半径为6cm,点O到直线l的距离为5cm,则直线l <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

  2. A. 相交

    B. 相离

    C. 相切

    D. 相切或相交

  3. 已知:点P到直线l的距离为3,以点P为圆心,r为半径画圆,如果圆上有且只有两点到直线L的距离均为2,则半径r的取值范围是 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

  4. A.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

    B.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

    C.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

    D.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

  5. 已知两圆的半径分别为15,圆心距为4,那么两圆的位置关系是 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

  6. A. 外离

    B. 外切

    C. 相交

    D. 内切

  7. 已知 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的半径为1,圆心0到直线l的距离为2,过l上任一点A <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的切线,切点为B,则线段AB的最小值为 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

  8. A. 1

    B.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

    C.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

    D. 2

  9.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 中, <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> ,以点B为圆心,AB为半径作圆B,以点C为圆心,半径长为13作圆C,圆B与圆C的位置关系是 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

  10. A. 外切

    B. 相交

    C. 内切

    D. 内含

  11. 如图 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 中, <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> ,点A <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
    MB上,以AB为直径作 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>MC相切于点D,则CD的长为 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>

A.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
B.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
C. 2
D. 3


 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
、计算题

  1. 已知:如图,AB <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的直径,BC是弦, <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> ,延长BAD,使 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
     <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 求证:DC <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的切线;
     <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> ,求DC的长.












  1.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 图,已知AB <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的直径,过 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 上的点C的切线交AB的延长线于点 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 于点D且交 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 于点F,连接 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
     <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 求证: <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
     <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> ,求BE的长.







  1.  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 图,AB <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的弦,若 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>
     <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 求证:BD <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的切线;
     <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> ,求BC的长.









  1. 如图,已知:C是以AB为直径的半圆O上一点, <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 于点H,直线AC与过B点的切线相交于点 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>CH中点,连接AE并延长交BD于点F,直线CF交直线AB于点G
     <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 求证:点FBD中点;
     <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 求证:CG <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的切线;
     <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>  <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> ,求 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a> 的半径.


 <a href="/tags/1254/" title="圆周" class="c1" target="_blank">圆周</a>