8th Math 7.5 Dilation Scale Factor

What is the scale factor if the triangle on the left is the original?

• 2
• 3/2
• 2/3
• 1/2

What is the scale factor if the smaller rectangle is the original rectangle?

• 4
• .25
• 5
• 6

True of False: When you shrink a figure, you multiply by a fraction. 

• true
• false

True of False: When you expand a figure, you multiply by a whole number. 

• true
• false

The __________ is the ratio of a length of the image to the corresponding length on the original figure.

• reduction
• enlargement
• scale factor
• center of dilation

If a line segment has a length of 12 units and after a dilation the image length is 4 units, what was the scale factor?

• 3
• 1/3
• 8

Identify the type of dilation for the scale factor k=1/2.

• Reduction

• Enlargement

• Isometry

• None of these

Identify the type of dilation given the scale factor k=5/4

• Reduction

• Enlargement

• Isometry

• None of these

The smaller triangle is transformed to create the larger triangle. Which of these is the scale factor of the dilation centered at the point (0, 0)?

• 4

• 2

• 1

• 1/2

Figure A′B′C′D′F′ is a dilation of figure ABCDF by a scale factor of ½ ​​. The dilation is centered at (–4, –1).

Which statement is true?

• A

• B

• C

• D