Dilation Missing Measurements

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• 1/2

• 1/4

• 4

• 2

What scale factor was used to produce the image?

• 2

• -2

• ¹/₂

• 1

Find the measure of x:

• 6

• 24

• 33

• 36

In a dilation what mathematical operation is used with the scale factor?

• addition 

• subtraction 

• multiplication 

• division 

The scale factor for this dilation is:

Mathematical Equivalence

ON

Enlargement or reduction?  Find the scale factor!

• It's an enlargement; the scale factor is 1/2.

• It's an enlargement; the scale factor is 2.

• It's a reduction; the scale factor is 1/2.

• It's a reduction; the scale factor is 2.

What is the scale factor that dilated ABC to A'B'C' ?

• 2

• 3

• 4

• 6

Answer explanation

Each point on ABC was multiplied by SF of 3 to move to that circle!

These are ​ (a)   triangles because they have the ​ (b)   shape but ​ (c)   size. The sides are ​ (d)   .

• similar

• congruent

• same

• different

• proportional

When you are given a side length of a shape, you would ​ (a)   by the scale factor to find the NEW side length of the image shape.

• multiply

• divide

• add

• subtract

Dilate Triangle ABC by a scale factor of 1/2 with Point A as the center of dilation.