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WorksheetsPolygons and Isosceles and Equilateral Triangles
Total questions: 15
Worksheet time: 44mins
Name
Class
Date
1.
Find the measure of the missing angle.
a)
90o
b)
100
c)
130o
d)
50o
2.
Find the measure of the indicated angle.
a)
89
b)
211
c)
119
d)
81
3.
Find the sum of interior angles in a heptagon.
a)
900
b)
720
c)
540
d)
180
4.
Find the measure of angle E.
a)
9
b)
97°
c)
48°
d)
79°
5.
What is the SUM of the angle measures in a nonagon (9 sides)?
a)
1440°
b)
900°
c)
1080°
d)
1260°
6.
Find the value of X
a)
94
b)
25
c)
36
d)
180
7.
What is the length of BC?
a)
6
b)
31
c)
29
d)
11
8.
What is the measure of ∠S?
a)
60⁰
b)
52⁰
c)
45⁰
d)
36⁰
9.
What is the value of x?
a)
16
b)
17
c)
51
d)
78
10.
Which angle is the vertex angle?
a)
<C
b)
<A
c)
<B
11.
What is the value of y?
a)
14
b)
4
c)
6
d)
7
12.
What is the value of x?
a)
60
b)
20
c)
15
d)
40
13.
△ABC is an isosceles triangle. <B is the vertex angle. m<B = 78. What is the measure of <C?
a)
24
b)
51
c)
78
d)
102
14.
△ABC is an equilateral triangle. Its perimeter is 48 cm. What is the length of AB?
a)
144
b)
48
c)
24
d)
16
15.
△ABC is an isosceles triangle. <A is the vertex angle. The perimeter of an isosceles triangle is 29 in. AB = 12 in. What is the length of BC?
a)
5
b)
12
c)
17
d)
8.5
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