Scale Factors

what is the scale factor?

• 1

• 3

• 1/3

• 8

If a copy has a scale factor of 1/2 it is

• bigger

• smaller

• the same size

If a copy has a scale factor of 6 then it is

• bigger

• smaller

• the same size

What is the scale factor?

• 1

• 2

• 1/2

• -2

what is the length of x?

• 5

• 4

• 20

• 8

A photo has dimensions 12 x 6. Bob wants to get an enlargement that has scale factor 3. What are the dimensions of the new photo?

• 36 x 18

• 15 x 9

• 18 x 9

• 4 x 2

What is the scale factor from triangle ABC to triangle DEF?

• 1/2

• 7/3

• 2/1

• 10/3

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

• x = 20

• x = 12

• x = 5

• x = 4

Which of the following are scaled copies of the original portrait? Select ALL the apply.

• A

• B

• C

• D

• E

Is Figure B a scaled copy of Figure A?

• Yes

• No