Reduction and Enlargements

What is the scale factor from the small shape to the big shape?

• 1/2

• 7/3

• 2

• 10/3

What is the scale factor from ΔDEF to ΔABC?

• 2

• 3/2

• 2/3

• 1/2

If AB = 3 and the scale factor is 4 then how long is A'B'?

If A'B'=20 and AB=100 then what is the scale factor to map ABC onto A'B'C'? Answer either as a fraction in reduced form or as an integer.

Which rule is a REDUCTION?

OA'=9 and OA=36. Determine A'C' if AC = 64

If the scale factor is less than one, the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger

If the scale factor is greater than one, the new figure will be

• reduction

• enlargement

• scale

• not proportional

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

• addition 

• subtraction 

• multiplication 

• division 

If the scale factor is greater than 1, the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger