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Vocabulary
Equivalent Ratios
Scaled Copies or Not?
Area & Other
What is the Scale Factor
100
Two sides that are in the same place on both an original figure and a scale drawing are called ______________ sides.

What is "corresponding"

100

1 : 4 and ____ : 12

What is "3"

100
Rectangle A: 14 in. by 20 in.

Rectangle B: 7 in. by 10 in.

What is "yes"

100

The scale factor is 2. The sides of the scale copy are all 2 times longer than the original, and the area is _____ times bigger.

What is "4"

100

Original Figure: 7 inches by 14 inches

Scaled Copy: 21 inches by 42 inches

What is "3"

200
The number you multiply side lengths by to make a similar figure

What is "scale factor"

200

5 : 10 and 15 : ____

What is "30"

200

Rectangle A: 3 in. by 7 in.

Rectangle B: 9 in. by 28 in.

What is "no"

200

True or False: If the scale factor is 3, then the area of the scaled copy will be 6 times bigger than the original

What is "false"

200

Original figure: 2 inches by 6 inches

Scaled figure: 18 inches by 54 inches

What is 9

300

If the scale factor is less than 1 (example: 0.25) then this will happen to the scaled copy.

What is "it will be smaller"

300

3 : 7 and 30 : ____

What is "70"

300

Triangle A's angles: 60, 40, and 80

Triangle B's angles: 55, 30, and 95

What is "no"- the corresponding angles are all different

300

The original scale used to create a blueprint is 1cm = 10ft.  This would happen to the size of the blueprint if a new scale of 1cm = 5 ft is used.

What is "becomes larger"

300

Rectangle A: 5 inches by 25 inches

Rectangle B: 1 inch by 5 inches

What is 1/5

400

The relationship between a measurement on a drawing and the corresponding measurement on the actual object

What is "scale"?

400

9 : 3 and 36 : ____

What is "12"

400

Rectangle A: 4 in. by 5 in.

Rectangle B: 6 in. by 7.5 in.

What is "yes"

400

The area of the original figure is 10. The scale factor is 2. The area of the scaled copy is _______.

What is "40"

400

Rectangle A: 24 inches by 48 inches

Rectangle B: 72 inches by 144 inches

What is 3

500

When a scale factor of 2 is used to go from one image to another, 1/2 can be used to go in the reverse direction.  The term that describes these numbers is called...  (Other example: 3 & 1/3

What are "reciprocals"

500

___ : 8 and 30 : 20

What is "12"

500

A house is 30 feet tall and 24 feet long. Drawing #1 is 15 inches tall and 11 inches long. Drawing #2 is 5 inches tall and 4 inches long. Which one is the scale drawing?

What is "Drawing #2"

500

A park is 80 meters long and 45 meters wide.  The scale used to create a scale drawing is 1 unit = 5 meters.  What are the dimensions of the scale drawing?

What is "16 by 9 units"?

500

Rectangle A: 9 inches by 24 inches

Rectangle B: 3 inches by 8 inches


What is "1/3"