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Vocabulary
Ratios and scales
Scaled Copies or Not?
Scale Factor, Area, and perimeter
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

A square has side lengths of 3in. What is the AREA if it is decreased by a scale factor of 1/3?

1in2


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

Ms. Sullivan is making a scale copy of a rectangle that is 14ft long and 6ft wide. She is using a scale factor of 2/3. What is the AREA of the scaled copy. 

37.33ft2


200

Original figure: 2 inches by 6 inches

Scaled figure: 18 inches by 54 inches

What is 9

300

When the scale factor is greater than one and the scaled copy gets bigger it is called

enlargement 


300

A map has a scale of 1cm : 3 miles. On the map, the distance between two towns is 7cm. What is the actual distance between the two towns? Include units for your answer.

21miles

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

Find the area of a rectangle with a length of 4cm and a height of 2 cm if it is increased by a scale factor of 5. 

200cm2


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

A map has a scale of 1cm : 4 kilometers. The actual distance between two cities is 52 kilometers. What is the distance between the cities on the map?

13 cm

400

Rectangle A: 4 in. by 17 in.

Rectangle B: 6 in. by 25.5 in.

What is "yes"

400

The side lengths of the original square is 10. The scale factor is 2. The perimeter of the scaled copy is _______.

80


400

Rectangle A: 24 inches by 48 inches

Rectangle B: 72 inches by 144 inches

What is 3

500

An equation where two ratios are equal

What is "proportion"

500

A scale on a map is 2cm:5 miles. The distance on the map is 18cm. What is the ACTUAL distance?

45miles

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 bedroom is 1.8cm by 3.0cm. The scale is 1cm:2m. What is the AREA of the ACTUAL bedroom.

21.6

500

Rectangle A: 9 inches by 24 inches

Rectangle B: 3 inches by 8 inches


What is "1/3"