Dilations

Question 1

Dilation

Answer 1

a transformation where a figure is “reduced” or “enlarged” by a given scale factor with respect to a given point

Question 2

What type of transformations are dilations?

Answer 2

similarity transformation

Question 3

What is the “given point” for dilations?

Answer 3

center of dilation

Question 4

How do you find the scale factor?

Answer 4

image length divided by preimage length

Question 5

What is the rule for dilations?

Answer 5

If the center of dilation is the origin, (x, y) -> (nx, ny) (n is the scale factor)

Question 6

What do you have to do to fractions?

Answer 6

simplify

Question 7

What do negative factors do?

Answer 7

change location

Question 8

Isometry

Answer 8

rigid transformation

Question 9

How do you write vector notation for a dilation?

Answer 9

capital ‘D’ and center of dilation THEN scale factor in subscript