Unit 10 Pretest
1. Draw a common internal tangent to
R and
R
S
S below.
Unit 10 Pretest
2. Identify the secant line in the given diagram.
H
F
A
G
O
C
B
D
E
Unit 10 Pretest
3. AB is tangent to
O at A (not drawn to scale). Find
the length of the radius R, to the nearest tenth.
A
r
O
10
B
6
Unit 10 Pretest
4. Given ST is tangent to
Find RT .
R at S
S
3
R
9
T
Unit 10 Pretest
5. Find mPQ in
A. Drawing is not to scale.
 y  25 
Q
 y  5
R
P
A
S
Unit 10 Pretest
6. What is the measure formed by the hour and minute
hands at 12:30?
12
9
3
6
Unit 10 Pretest
7. If QT and RW are diameters in
P, find mQW .
S
R
Q
30
110
P
T
W
Unit 10 Pretest
8. Given
O with radius 10 and OC  6. Find the measure
of AB.
A
C
O
B
Unit 10 Pretest
9. Find mBC and mD.
B
C
35
A
D
Unit 10 Pretest
10. Find mAD and mC.
B
C
65
A
D
Unit 10 Pretest
11. Given mX  110 ; WZ  YZ ; mY  110 ,
find the measure of each of the following.
W
A) Z
B) WY
C) W
Z
X
Y
Unit 10 Pretest
12. Find m1.
160
1
Unit 10 Pretest
13. Find m1.
240
1
Unit 10 Pretest
14. Find m1.
72
32
1
Unit 10 Pretest
15. Find the value of x if the mAB  40 and the mCD  35
(Not Drawn to Scale.)
O
A
x
B
D
C
Unit 10 Pretest
16. Write an equation that can be used to solve for x.
Then solve the equation for x.
C
x
B
32
A
70
D
Unit 10 Pretest
17. A hummingbird is flying toward a large tree with a radius
of 4'. When it's 20' from the center of the tree, its lines of
sight form two tangents. What is the measure of the arc on
the tree that the hummingbird can see? (Round to two
decimal places.)
4'
H
20'
Unit 10 Pretest
18. What is the measure of C and D so that a circle may be
circumscribed about ABCD below?
C
B
115
A
82
D
Unit 10 Pretest
19. Find the measure of DBC in
B
A
P
D
P.
64
C
Unit 10 Pretest
20. Given RP  11, RA  3, PQ is tangent to
Find PQ.
A
R
P
Q
R at Q