Describe Dilation

Dilations produce ___________ figures.

• congruent

• same

• different

• similar

Which is an example of the algebraic rule for a DILATION?

• (3x, 3y)

• (x+3, y-2)

• (-x, -y)

• (y, -x)

A square has sides of 6 inches and is dilated to form a square that has sides of 24. What is the scale factor?

• 1/4 because 6/24 = 1/4

• 4 because 24/6 = 4

• 30 because 24 + 6 = 30

• No way to know with this information.

Which of the following could be a dilation?

• (6x, 6y)

• (x + 1, y - 5)

• (x, -y)

• (-x, -y)

The scale factor for this dilation is:

Mathematical Equivalence

ON

Is the following a dilation?

• Yes

• No

How do you find the scale factor when given a dilation?

• SF = new/original

• SF = new + original

• SF = original/new

• SF = new - original

Which scale factor would preserve congruence in a dilation?

• 0

• 1

• 4

• 0.5

What type of transformation is this?

• Translation

• Dilation

• Reflection

• Rotation

Which transformation enlarges or reduces a pre-image?

• Translation

• Rotation

• Reflection

• Dilation