Dare
Practice A
For use
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with pages
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The diameter of a circte is given. Find the radius.
1.d=6in.!Z
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2.d=24cm:L
3.
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10. FH v
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d:9in. )Z
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A.Center
B. Chord
C.Diameter
D.Radius
13.CA
E. Point oftangency
14.
F. Common external tangent
M c
4,
F= -r'lz*i
15. AB H
G. Common internal. tangent
16. DE (-
H. Secant
A o,
(t,a) c = Z
17. What are the center and radius of oA?
Use the diagram at the
right.
o (-11 Z) ,f: J
of the two circles.|t ( 5 , a)
18. What are the center and radius of OB? B
19. Describe the intersection
20. Describe all the common tangents of the two circles.
21. Are the two circles congruent? Explain.
x-qxis... \=o
Y*, %q
Tell whether AB is tangent to OC. Explain your reasoning.
23.
B q'
t?
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zo'1 gznt,a
.lao=b,] tL*o
t{oo -$ SZa
Z
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ttoQ: ttlY.+ZS
Baseball
5 , *='{
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(a
L
x=
Stadiurn The shape of the outfield fence in a
stadium is that of a quarter circle. If the distance
baseball
from home plate to the wall is 330 feet, what is the radius
of the entire circle? What is the diameter of the circle?
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t
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n = 33o$t
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s
ana AD are tangent to OC. Find the value of x.
B
.1x-L
:3r+t
A \.ly;lO
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xz+25
z\.
fu'
3 =la
3
xa = r-l
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