Dilations and Similar Figures Review

A dilation is which of the following: 

• only an enlargement
• only a reduction
• Either an enlargement or a reduction
• Neither an enlargement or a reduction

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True
• False

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True
• False

Similar figures have the same ______ but different ______. 

• measure; shapes
• sizes; shapes
• value; measures
• shape; sizes

What scale factor was used to produce the image?

• 2
• -2
• ¹/₂
• 1

Dilation changes a shape's __________?

• Size

• Position

• Form

• Orientation

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

Triangle PQR is the image of triangle JKL after a dilation. Is the dilation an enlargement or a reduction? Explain.

• Enlargement, because the image is larger than the original figure.

• Enlargement, because the image is smaller than the original figure.

• Reduction, because the image is smaller than the original figure.

• Reduction, because the image is larger than the original figure.

Choose the correct scale factor:

• 2.5

• 1.5

• 3.5

• 4