Introduction to Dilation

What is dilation?

• Sliding an image.

• Flipping an image.

• Rotating an image.

• Making an image smaller or bigger.

What letter is used to represent the scale factor?

• f

• s

• k

• x

An ___________ is when an image gets bigger.

• congruent

• reduction

• enlargement

• dilation

A __________ is when an image gets smaller.

• congruent

• reduction

• enlargement

• dilation

Which triangle is the NEW image?

• Triangle ABC

• Triangle A'B'C'

Is this a reduction or enlargement?

• Reduction

• Enlargement

• They are the same size.

Is this a reduction or enlargement?

• Reduction

• Enlargement

• They are the same.

Is this a reduction or enlargement?

• Reduction

• Enlargement

• They are the same size.

Which of the following is a correct algebraic representation for dilation?

• (x + 3, y + 3)

• (x - 2, y + 5)

• ( 3x, 3y)

• ( 2x, 5y)

What is the scale factor if the dilation is (10x, 10y) ?