

1. 
Triangles M and N are similar. The ratio of a side of triangle N to a corresponding side of triangle M is 4:3. The lengths of triangle M are 12 inches, 18 inches, and 24 inches. Find the perimeter of triangle N. 


A. 
96 in. 
B. 
72 in. 


C. 
76 in. 
D. 
84 in. 


Hint 


2. 
Hakan is standing next to a building whose shadow is 15 feet long. If Hakan is 6 feet tall and is casting a shadow 2.5 feet long, how high is the building? 


A. 
40 ft 
B. 
30 ft 


C. 
36 ft 
D. 
24 ft 


Hint 


3. 
When you look into a mirror, you see light that has bounced off at the same angle that it hit the mirror, so your line of sight creates similar triangles, as illustrated below. Use the similar triangles below to find the height of the tree. 





A. 
50 ft 
B. 
62.5 ft 


C. 
14.4 ft 
D. 
40 ft 


Hint 


4. 
The Sears Tower in Chicago, Illinois is 1,454 feet tall. Its twin antennas reach an additional 253 feet. If a souvenir shop sells a replica of the Sears Tower that is 9 inches tall, how tall are the twin antennas on the replica? 


A. 
0.09 ft 
B. 
0.13 ft 


C. 
1.57 ft 
D. 
0.15 ft 


Hint 


5. 
The tallest tree in the United States is a Coast Redwood in Jedidiah Smith State Park in California. It is 321 feet tall. Suppose you are 5 feet 8 inches tall and cast a shadow that is 2 feet at a certain time of day. About how long is the tree’s shadow at the same time of day? 


A. 
113 ft 
B. 
118 ft 


C. 
128 ft 
D. 
910 ft 


Hint 


