直线和圆的位置关系
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Shuang Liu
Used 3+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列说法:①圆中弦的垂直平分线一定经过圆心;②与半径垂直的直线是圆的切线;③相等的圆心角所对的弦也相等;④圆内接四边形有且只有一个,其中不正确的个数( )
1
2
3
4
2.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
△ABC的周长为36,面积为36,则该三角形的内切圆半径是( )
1
2
3
6
3.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
已知⊙O的半径为5,点O到直线l的距离为3,则直线l与⊙O的位置关系是( )
相切
相交
相离
无法判断
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
如图,AB是⊙O的直径,PA与⊙O相切于点A,∠ABC=25°,OC的延长线交PA于点P,则∠P的度数是( )
25
35
40
50
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
已知⊙O的半径是一元二次方程x2-2x-3=0的一个根,圆心O到直线l的距离d=4,则直线l与⊙O的位置关系是( )
相交
相切
相离
无法判断
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
如图,AB、AC、BD是⊙O的切线,切点分别为P、C、D,若AB=4,AC=3,则BD的长是( )
2.5
2
1.5
1
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列说法中,正确的是( )
A.长度相等的弧是等弧
B.三点确定一个圆
C.垂直于半径的直线是圆的切线
D.同弧所对的圆周角相等
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