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Private Library
Chapter 7 Review: MC
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by Catherine Hallowell
| 15 Questions
1
2 pts
Given that x/y = 3/5 determine which proportion is NOT equivalent.
A x/3 = y/5
B 3x = 5y
C y/x = 5/3
2
5 pts
Determine the similarity ratio given STUV~XYZW, TS=21, XY=35, WZ=20
A 21:20
B 3:5
C 5:3
3
5 pts
The area of a rectangle is 1500. The ratio of the length to width is 3:5. What is the length?
A 50
B 25
C 30
D 100
4
2 pts
What is the image of (3, 4) dilated about the origin with a scale factor of 2.
A (3/2, 2)
B (5, 6)
C (6, 8)
5
2 pts
What is the rule for a dilation about the origin with scale factor 1/3.
A (x,y) -> (1/3x, 1/3y)
B (x,y) -> (3x, 3y)
C (x,y) -> (3+x, 3+y)
6
5 pts
True/False: All parallelograms are similar.
A True
B False
7
5 pts
True/False: All isosceles triangles are similar.
A True
B False
8
10 pts
Always/Sometimes/Never: Equilateral triangles are _____________________ similar.
A Always
B Sometimes
C Never
9
10 pts
Ms. Matta is reading a map with a scale of 1 inch = 40 miles. She measures about 3.1 inches between Greenville and Yorktown. What is the actual distance between the cities?
A 12.9 miles
B 124 miles
C 78.6 miles
10
10 pts
On a sunny day, a 12 in umbrella casts a shadow that is 2.4 ft long. A nearby tree casts a shadow that is 40 ft long. How tall is the tree?
A 16.67 ft
B 200 ft
C 16.67 inches
D 300 inches
11
10 pts
Solve for x.

A 6
B 6 or 7
C 7
D 8
12
10 pts
Dilate (3,4) about the point (-3,1) with a scale factor of 2. What is the image of A?
A (3/2, 2)
B (6,8)
C (9,7)
13
10 pts
The altitude, XR , to the hypotenuse of right ∆WXY divides the hypotenuse into segments that are 12 and 10 cm long. Find the length of the altitude.
A 8
B 1.2
C 8.9
14
1 pt
Which of the following is NOT a way to prove triangles are similar.
A SAS
B AA
C HL
D SSS
15
1 pt
If the scale factor of a certain dilation is 5/4, then the dilation was a _________________.
A Reduction
B Enlargement
C
D