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7-1 Self Check

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

 1. 
In the figure, ∆ABC is a right triangle.  AD is perpendicular to BC, and the measure of BD = 15 meters and DC = 25 meters.  What is closest to the measure of AD?
mc001-1.jpg
A
20 m
B
375 m
C
19.4 m
D
29.2 m
 

 2. 
In the figure, ∆ABC is a right triangle.  AD is perpendicular to BC, and the measure of DC = 8 meters and AC = 20 meters.  What is the measure of BC?
mc002-1.jpg
A
50 m
B
160 m
C
80 m
D
12.6 m
 

 3. 
Jimmy is trying to measure the height of the flag pole.  Using the diagram below, how tall to the nearest foot is the pole?
mc003-1.jpg
A
83 ft
B
16 ft
C
9.5 ft
D
46 ft
 

 4. 
A road from Peter’s house and a road from Sara’s house meet at their school at a right angle.  The post office is 5 miles east of the school and 3 miles north of Peter’s house.  What is the distance from Sara’s house to the post office.
mc004-1.jpg
A
4 miles
B
8.3 miles
C
3.8 miles
D
11 miles
 
 
For the following question(s), use the diagram below.
nar001-1.jpg
 

 5. 
Which letter would complete the proportion mc005-1.jpg
A
b
B
c
C
d
D
e
 

 6. 
Which letter would complete the proportion mc006-1.jpg
A
a
B
b
C
c
D
d
 
 
Use the figure below to answer the following question(s).
nar002-1.jpg
 

 7. 
Find the length of AB.
A
4.9
B
24
C
6.3
D
40
 

 8. 
Find the length of AD.
A
4.9
B
24
C
6.3
D
40
 

 9. 
Find the geometric mean of 4 and 6.
A
5
B
24
C
mc009-1.jpg
D
2mc009-2.jpg
 

 10. 
The geometric mean of x and 2x is 6.  Find x.
A
mc010-1.jpg
B
9
C
6
D
2mc010-2.jpg
 



 
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