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- 1. Multiple Choice
Scale factor is the number that you _______ to calculate the new dimension.
add
subtract
multiply
divide
- 2. Multiple Choice
If the linear scale factor is 4, what is the area scale factor?
2
8
16
25
- 3. Multiple Choice
A scale factor of 1/2 is used to change the dimensions of a rectangle with a length of 7 centimeters and a width of 5 centimeters. What is the perimeter of the resulting rectangle?
12
35
24
38
- 4. Multiple Choice
Which of the following are 2-dimensional measurements? Select all that apply.
Length of rope
Volume of a cylinder
Area of a square
Area of a triangle
Perimeter of a rectangle
- 5. Multiple Choice
A scale factor of 2 is used to enlarge the dimensions of a square. What is the effect of this change on the area of the square?
The area will be half as big.
The area will be twice as large.
The area will be 4 times larger.
The area will be 8 times larger.
The area will not change.
- 6. Multiple Choice
The dimensions of a rectangular photo are 3.5 in. x 5 in. The dimensions of the photo are enlarged by a scale factor of 2.5. What is the perimeter of the new photo?
17.7 in2
8.75 in. X 12.5 in.
42.5 in.
There is not enough information.
- 7. Multiple Choice
Two shapes are ___________ if their corresponding sides are proportional and their corresponding angles are congruent.
Similar
Ratio
Scale factor
Not similar
- 8. Multiple Choice
Angle Angle Criterion for Triangles: If two angles of one triangle are congruent to two angles of another triangle, then the two triangles are ___________________.
similar
cousins
triangles
360 degrees
- 9. Multiple Choice
These two triangles are
similar
not similar
not enough information
- 10. Multiple Choice
Stefano holds up an 8-inch pencil 32 inches from his eye. The pencil fills the image of a sculpture that is 40 feet away. How tall is the sculpture?
10
8
22
14
16
- 11. Multiple Choice
What will be true about this rectangle if you use a scale factor of 1/2 to change the dimensions? Select all that apply.
The new length is 16 in.
The new perimeter is 11 in.
The new perimeter is 21 in.
The new width is 1.5 in.
The new length is 4 in.
- 12. Multiple Choice
Which of the following are 1-dimensional measurements? Select all that apply.
Length of rope
Volume of a cylinder
Area of a square
Area of a triangle
Perimeter of a rectangle
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