The Polygon Angle-Sum Theorems Worksheet With Answers Page 8
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8Test Prep
Test Prep
A sheet of blank grids is available
in the Test-Taking Strategies with
For Exercises 64–70, you may need the formula (n - 2)180 for the sum of
Gridded Response
Transparencies booklet. Give this
the angle measures in a polygon with n sides.
sheet to students for practice with
64. What is the sum of the measures of the angles of a 25-gon?
4140
filling in the grids.
65. A company is manufacturing a gear that has the shape of a regular polygon.
Resources
The measure of each angle of the gear is 162. How many sides does the
For additional practice with a
gear have?
20
variety of test item formats:
•
Standardized Test Prep, p. 198
66. The car at each vertex of a Ferris wheel holds a maximum of 5 people.
•
Test-Taking Strategies, p. 188
The sum of the measures of the angles of the Ferris wheel is 7740. What is
•
Test-Taking Strategies with
the maximum number of people that the Ferris wheel can hold?
225
Transparencies
67. What is the sum of the measures of the exterior angles, one at each vertex,
of an octagon?
360
68. Exactly three angles of a pentagon are congruent. The other two angles are
complementary. What is the measure of one of the three congruent angles?
150
69. The sum of the measures of the angles of a regular polygon is 4500. How
many sides does the polygon have?
27
70. What is the measure of an exterior angle of a regular polygon with 36 sides?
10
Lesson 3-3
Mixed Review
Mixed Review
Lesson 3-4
x
2
2
Find each missing angle measure.
x
for
GO
71.
Help
(y
15)
35
120, 25
3y
104, 76, 35, 69
72.
73.
(2y
1)
50, 40
(x
23) (x
13)
x
y
(x
28)
Lesson 2-4
Name the property that justifies each statement.
Subst. Prop.
Distr. Prop.
74. 4(2a - 3) = 8a - 12
75. If b + c = 7 and b = 2, then 2 + c = 7.
RS
RS
77. If &1
&4, then &4
&1.
76.
Reflexive Prop. of O
Symm. Prop. of O
78. If 2r = 18, then r = 9.
79. If AB = BC and BC = 1, then AB = 1.
Div. Prop.
Trans. Prop.
Lessons 1-4, 1-6
Identify the following in the diagram.
RT
, RK
80. a pair of opposite rays
M
B
l BRT, l BRK
81. two right angles
K
R
82. two segments
T
82. Answers may vary.
BR
TK
Sample:
and
l TRM
83. an acute angle
84. an obtuse angle
83. Answers may vary.
l TRK
85. a straight angle
86. a midpoint
R
Sample: l BRM
164
Chapter 3
Parallel and Perpendicular Lines
page 165 Algebra 1 Review
11. The line is steeper than line r,
but has the same tilt.
10. The line is not as steep as line <,
y
but has the same tilt.
2
y
x
2
O
2
x
O
2
164
3
1
3
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