WorksheetsSums of Angles in a Triangle
Total questions: 26
Worksheet time: 1hrs 11mins
Name
Class
Date
1.
The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.
a)
45°
b)
90°
c)
180°
d)
360°
2.
Find the measure of the angle indicated.
a)
139°
b)
66°
c)
138°
d)
116°
3.
What is the third angle of a triangle whose 1st angle is 79 and the 2nd angle is 43?
a)
43
b)
58
c)
72
d)
101
4.
Find the measure of the missing angle.
a)
90o
b)
100
c)
130o
d)
50o
5.
Solve for x.
a)
16
b)
11
c)
50
d)
6
6.
Solve for x THEN find the degrees for angle A.
a)
44o
b)
96o
c)
-14o
d)
63o
7.
Solve for x.
a)
-12
b)
-8
c)
-10
d)
-5
8.
Angles that are exactly 90 degrees are called _____ ______.
a)
tight angles
b)
acute angles
c)
obtuse angles
d)
right angles
9.
If 2 of the angles of a triangle are 30 and 70 degrees, the third angle measures...
a)
80
b)
100
c)
60
d)
90
10.
Find the measure of the indicated angle.
a)
26
b)
36
c)
85
d)
144
11.
What is the third angle of a triangle whose 1st angle is 34 and 2nd angle is 101?
a)
32
b)
39
c)
45
d)
54
12.
Solve for x.
a)
-8
b)
-4
c)
-6
d)
-10
13.
What is the value of x?
a)
x = 54
b)
x = 9
c)
x = 24
d)
x = 144
14.
Solve for x in the following problem.
a)
A
b)
B
c)
C
d)
D
15.
If m∠D=(x + 20)o, m∠E=xo, and m∠F=30o, find x and m∠D.
a)
x = 65, m∠D = 85
b)
x = 130, m∠D = 150
c)
x = 40, m∠D = 80
d)
x = 100, m∠D = 120
16.
Solve for x.
a)
16
b)
11
c)
50
d)
6
17.
Two angles that add up to 90 degrees are called _____________ ______.
a)
supplementary angles
b)
complementary angles
c)
corresponding angles
d)
right angles
18.
Two angles that add up to 180 degrees are called _____________ ______.
a)
right angles
b)
corresponding angles
c)
complementary angles
d)
supplementary angles
19.
Find the measure of the missing angle.
a)
135o
b)
35o
c)
45o
d)
30o
20.
Find the measure of angle D.
a)
140 degrees
b)
16 degrees
c)
40 degrees
d)
90 degrees
21.
Name the angle relationship.
a)
Alternate Interior
b)
Alternate Exterior
c)
Corresponding
d)
Vertical Angles
22.
What is the measure of angle b?
a)
36o
b)
56o
c)
63o
d)
117o
23.
Find the indicated angle measure. (What is ?)
a)
51°
b)
37°
c)
167°
d)
41°
24.
Find the measure of the indicated angle.
a)
145 degrees
b)
24 degrees
c)
20 degrees
d)
21 degrees
25.
Solve for x.
a)
-12
b)
-8
c)
-10
d)
-5
26.
Solve for x
a)
28
b)
12
c)
10
d)
2
100 %
