Proportion Quiz
Solving problems using proportions, including similar triangles and scale factor.
- 1.
What is the definition of a ratio.
- A.
A fraction
- B.
A number of units
- C.
A set if numbers that have the same unit.
- D.
A comparison of two numbers
- E.
The shortest side of a right triangle
Correct Answer
D. A comparison of two numbers -
- 2.
What is scale factor?
- A.
An equation stating that two ratios are equal.
- B.
A ratio of the corresponding sides of similar figures
- C.
The distance around a polygon.
- D.
The cross products of a proportion
- E.
The rating of the difficulty of a problem on a scale of 1 to 10
Correct Answer
B. A ratio of the corresponding sides of similar figures -
- 3.
When do you have to label the units of a ratio.
- A.
Never
- B.
Always
- C.
When they are the same
- D.
When they are different
- E.
When the moon is full
Correct Answer
D. When they are different -
- 4.
How can you verify that the solution to a proportion is correct?
- A.
Your answer is a whole number.
- B.
The cross products are equal
- C.
The ratios cannot be reduced
- D.
The units are the same
- E.
The top number of each ratio is a prime number
Correct Answer
B. The cross products are equal -
- 5.
Corresponding sides of __________ triangles are proportional.
Correct Answer
similar - 6.
The ratio of the area of similar figures is equal to
- A.
The sum of the areas
- B.
The scale factor
- C.
The ratio of the perimeters
- D.
The sides squared
- E.
The scale factor squared
Correct Answer
E. The scale factor squared -
- 7.
Jeff worked for 6 hours mowing lawns and earned 51 dollars. How much would he earn if he worked for 10 hours?How could you define the proportion to solve this problem?Check all that would work.
- A.
Hours over earnings
- B.
Number of lawns of earnings
- C.
Number of lawns over hours
- D.
Earnings over hours
- E.
Hours over number of lawns
Correct Answer(s)
A. Hours over earnings
D. Earnings over hours -
- 8.
Jeff worked for 6 hours mowing lawns and earned 51 dollars. How much would he earn if he worked for 10 hours?Write and solve a proportion to find the solution.
- A.
$55
- B.
$91
- C.
$85
- D.
$78
- E.
$60
Correct Answer
C. $85 -
- 9.
Two triangles are similar. The base of the first triangle is 12 cm and the height is 18 cm. The base of the second triangle is 10 cm. The height of the second triangle is __________cm
Correct Answer
15 - 10.
The scale factor of two similar figures is 3:2. If the area of the copy is 18 sq inches, what is the area of the original?
- A.
8 sq inches
- B.
12 sq inches
- C.
17 sq inches
- D.
27 sq inches
- E.
9 sq inches
Correct Answer
A. 8 sq inches -
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Current Version
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Jan 11, 2013Quiz Edited by
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Apr 01, 2010Quiz Created by
Karenhughes
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