Scales and Proportions

If you were asked to draw a scaled copy with a scale factor of 4, the copy will be...

• Larger

• Smaller

• The Same Size

Answer explanation

Scale factor of 4 means you multiply all side lengths by 4. If the lengths are getting longer, the shape is getting larger.

• Larger

• Smaller

• The Same Size

Which of the following is TRUE about corresponding sides?

• They are sides that are in the same position on an original image and on a scaled copy of that image.

• Sides that are anywhere on scale copies, but it doesn't matter if they are in the same spot

• There is only one set of corresponding sides on an image and its scale copy

• You can have corresponding sides on images that are not scale copies

This is a drawing that I made of my car. It is a scale copy of my car. The drawing is 3 cm long, and the scale factor is 1cm = 4ft. How many feet long is my real car?

• 12 feet

• 16 feet

• 10 feet

• 4 feet

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

• A

• B

• C

• D

• E

Identify the side length in Figure 1 that corresponds to the side length MQ in figure 2.

• BC

• AE

• CD

• DE

• 0.25
• 0.5
• 2
• 1/2

_{Line AB corresponds with what line?} 

• XZ

• XY

• YZ

• YX

What is the scale factor?

• 4

• 6

• 2.5

• 1.5

What is the scale factor?

• 1

• 2

• 3

• 4