Lessons 1–20
(See Still More Practice,p. 528.)
Use the figure below right for ex. 1–5. Classify each angle
as right, acute, obtuse, orstraight. Then use a protractor to
find the exact measure of each angle. (See pp. 330–335.)
- DOF 2. AOF
- AOB 4. BOF
- Which angles are complementary? supplementary?
Use the figure at the right to name the angles. (See pp. 336–337.)
- the corresponding angle to AEH
- the alternate interior angle to BEF
- the alternate exterior angle to GFD
Use a compass and a straightedge. (See pp. 338–347.)
- Trace ABCon unlined paper.
Then construct DEFABC. - Bisect DEFfrom exercise 10.
Find the value of the variable in each polygon. (See pp. 348–351, 354–365.)
Draw the translation, reflection, and Draw a net for the solid figure.
rotation image. Use dot paper.
A
B
D
OF
AE
G
H
F
B
CD
B
A
C
P Q
O
45 °
n
n C
B
D
A
85 °
75 °
85 °
n
Y
V X
W
Z
110 °^110 °
n
K
J
Q
P O
N
M
L
92 °
116 °
161 °
135 °
160 ° 120 °
142 °
ABCD
- Mel colors
1
2 of a circle red. He then
marks off a sector with a central angle
of 40° and colors it blue. What is the
measure of the central angle of the
sector that is not red nor blue?
- Complete the analogy and explain your
answer: A rectangle is to a pentagonal
prism as a is to a hexagonal
pyramid.
?
(See pp. 352–353, 366–369.)
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