Shrinking and Scaling

The process of making a number larger by multiplying or smaller by dividing is called

• scaling

• inflating

• shrinking

• equivalency

Ratios that be scaled up or down to the same quantities are called

• ratio equals

• ratio table

• equivalent ratios

• equals

• 125

• 55

• 250

• 25

• 32

• 75

• 33

• 150

The pair of figures is similar. Find the missing side.

• x = 12

• x = 3

• x = 40

• x = 4

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

scale factor = _______

Mathematical Equivalence

ON

The pair of figures is similar. Find the missing side.

• x = 1

• x = 3

• x = 9

• x = 5

Find the scale factor of the enlargement from F to E

• 1/2

• 3

• 2

• 4

The pair of figures is similar. Find the missing side.

• x = 20

• x = 12

• x = 5

• x = 4

If a scale factor of 3 was used to enlarge an original into a new image, how much larger would the area be?

• 9 times as large

• 6 times as large

• 3 times  as large