Skills Practice Workbook - Glencoe

3–6
NAME DATE PERIOD
Skills Practice
Congruent Angles
Find the value of x in each figure.
1. 2. 3.
x°
152°
152 58 114
4. 5. 6.
(3x)° 78°
26 25 25
7. What is the measure of
an angle complementary to �XYZ
if �MOR � �XYZ? 42
48°
M
O R
Use the figure at the right.
9. If �1 � �3 and m�1 � 64, find the measure of
an angle that is supplementary to �3. 116
10. If �AOB is supplementary to �BOC, �BOC
is supplementary to �COD, and m�AOB � 58,
find m�BOC and m�COD. 122; 58
Z
11. Find the measure of an angle that is complementary
to �1 if �1 � �2 and m�2 � 75. 15
Y
90°
12. Find the measure of an angle that is supplementary to �4 if �4 � �9 and m�9 � 24.
156
© Glencoe/McGraw-Hill 17 Geometry: Concepts and Applications
58°
x°
(4x � 10)°
X A
(x � 8)°
(6x � 15)°
122°
45°
8. OA �� and OB �� are opposite rays
and OC �� and OD �� are also
opposite rays. If m�2 � 90 and
m�1 and � 45, what is m�4?
45
C
A
O 4
1
2
3
D
B
1
2
4
O
3
B
D
C