Dilations Similar Figures and Scale Factor

When trying to find the side lengths of the image or the coordinates of the image in a dilation, what operation do you perform using the scale factor? For example: A (2,1) and the scale factor is 3, A' will be (6,3).

• add

• subtract

• multiply

• divide

A __________________ is a transformation that enlarges or reduces the size from pre-image to image based on a scale factor.

• translation

• reflection

• rotation

• dilation

An ________________means that the image is larger than the pre-image.

• reduction

• enlargement

• flip

• spin

When the scale factor is greater than 1 on a dilation, it produces ___________________.

• a reduction

• a pre-image

• a spin

• an enlargement

Which scale factor will cause a reduction

• 4

• 100

• 7

• 1/4

Which scale factor will cause an enlargement?

• 5

• 0.5

• 5/10

• 0.55

A dilation with a scale factor of 4 will produce an enlargement.

• true

• false

A dilation with a scale factor of 2 will produce a reduction.

• true

• false

A dilation with a scale factor of 1/3 will produce a reduction.

• true

• false

In this example of a reduction, the blue figure is the image which means the scale factor has to be __________________.

• more than 1

• equal to 1

• less than 1

• nothing