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Vocabulary
Equivalent Ratios
Scaled Copies or Not?
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

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

Original figure: 2 inches by 6 inches

Scaled figure: 18 inches by 54 inches

What is 9

300

A drawing that represents an actual place, object, or person. All of the measurements in the scale drawing correspond to the measurements of the actual object by the same scale.

What is "Scale Drawing"


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

Rectangle A: 5 inches by 25 inches

Rectangle B: 1 inch by 5 inches

What is 1/5

400
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"

400

9 : 3 and 36 : ____

What is "12"

400

Rectangle A: 4 in. by 17 in.

Rectangle B: 6 in. by 25.5 in.

What is "yes"

400

Rectangle A: 24 inches by 48 inches

Rectangle B: 72 inches by 144 inches

What is 3

500

When you scale a figure or object what happens to the angles?

What is "they stay the same"

500

___ : 8 and 25 : 20

What is "10"

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

Rectangle A: 9 inches by 24 inches

Rectangle B: 3 inches by 8 inches


What is "1/3"