Name: 
 

Try It Out -- Chapter 10, Lesson 3


Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 
Select the term to complete the sentence.

The sum of the measures of the three angles in a triangle is _____.
a.
90°
b.
180°
c.
360°
 

 2. 
In the diagram shown, Ð1 can also be referred to as

m8ch10l3_files/i0030000.jpg
a.
ÐABC
b.
ÐACB
c.
ÐD
 

 3. 
What is the measure of Ðf?

m8ch10l3_files/i0040000.jpg
a.
45°
c.
15°
b.
30°
d.
105°
 

 4. 
Determine the measure of Ða.

m8ch10l3_files/i0050000.jpg
a.
35°
c.
25°
b.
120°
d.
155°
 

 5. 
Determine the measure of Ðx and Ðy.

m8ch10l3_files/i0060000.jpg
a.
40°; 50°
c.
50°; 50°
b.
40°; 40°
d.
50°; 40°
 

 6. 
Calculate the measure of Ðt.

m8ch10l3_files/i0070000.jpg
a.
160°
b.
75°
c.
80°
 

 7. 
Calculate the measure of Ðd.

m8ch10l3_files/i0080000.jpg
a.
138°
b.
42°
c.
48°
 

 8. 
Find the measure of each angle of DPQR.

m8ch10l3_files/i0090000.jpg
a.
ÐR = 90°, ÐP = 58°, ÐQ = 32°
b.
ÐR = 90°, ÐP = 32°, ÐQ = 58°
c.
ÐR = 180°, ÐP = 58°, ÐQ = 32°
 

 9. 
Determine the measure of ÐBAC.

m8ch10l3_files/i0100000.jpg
a.
52°
b.
36°
c.
26°
 

 10. 
Erica is building a set of corner shelves for her room.  She needs to cut a piece of shelving material into a triangle.  Since the shelf is to fit into the corner, one angle of the triangle measures 90°.  What is the measure of the other two angles of the triangular shaped shelf if the shelf forms an isosceles triangle?
a.
40°; 40°
b.
45°; 45°
c.
90°; 90°
 



 
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