Dilation

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

• True
• False

What is Dilation?

• Dilation means to enlarge or reduce
• Dilation means to reflect on something
• Dilation means to like something
• Dilation means to make something different by making it smaller

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)

• A'(9,9) B'(18,18) C'(27,9)
• A'(6,6) B'(9,9) C'(12,6)
• A'(0,0) B'(3,3) C'(6,0)
• A'(1,1) B'(2,2) C'(3,1)

A scale factor of less than one means

• that the image will be larger than the pre-image.
• That the image will be the same as the pre-image.
• That you need to subtract that amount off  of each side.
• That the image will be a reduction of the pre-image.

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

Which might be a scale factor for a ENLARGEMENT?

• 1/1
• 1/2
• 3/2
• 2/3

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

If your SF = 6/5, what type of dilation is it?

• Reduction

• Enlargement

 A dilation can produce a larger figure or a(n)______

• reduction
• enlargement
• scale factor
• center of dilation

A dilation can produce a smaller figure or a(n)______

• reduction
• enlargement
• scale factor
• center of dilation