Vocabulary
Scale Drawings
Scale Factors
Scaled Copies
Area and Perimeter
100
A copy of a figure where every length in the original figure is multiplied by the same number
What is a scaled copy?
100
On a map, the distance from your house to the nearest mall is 5 inches. The map scale is 1 inch = 30 miles. What is the actual distance, in miles, between your house and the mall?
150 miles
100
What is the scale factor from the small triangle to the large triangle
5
100
The operation do we use to create scaled copies?
Multiplication?
100
If the rectangle is enlarged with a scale factor of 2, what is the perimeter of the new rectangle?
36 inches
200
A point, segment, angle, or distance in an original figure that matches up with a point, segment, angle, or distance in a copy
What is a corresponding part?
200
The distance between Town C and Town D on a map is 5.5 cm. If the scale is 1 cm = 10 miles, what is the actual distance between the towns?
55 miles
200
What is the scale factor between the two scaled copies below?
2
200
What are the two missing lengths on the scaled copy?
3 and 5
200
If the rectangle is enlarged with a scale factor of 3, what is the area of the new rectangle?
126 inches2
300
The number we multiply all the lengths in the original figure by to create a scaled copy
What is the scale factor?
300
Miguel is building a model of the Eiffel Tower which is about 1100 feet tall. If his model is 22 inches tall, what scale did he use?
A. 1 in = 25 ft
B. 1 in = 40 ff
C. 1 in = 50 ft
D. 1 in = 75 ft
C. 1 in = 50 ft
300
The scale factor between the following two polygons
3
300
What is one characteristic of scale copies
Answers will vary
300
A rectangle with side lengths of 2 and 6 is enlarged with a scale factor of 6. What is the perimeter of the new rectangle?
96 units
400
This happens to the scaled copy when the scale factor is less than 1.
It gets smaller!
400
A map of Virginia was drawn using a scale of 0.5 inch = 15 miles. Alyssa and her family traveled from Roanoke to Williamsburg. On the map, the two cities are approximately 7 inches apart. How far did her family travel on vacation?
210 miles
400
What is the scale factor between the two polygons (they are scaled copies)
1/4
400
Are the two polygons scaled copies?
NO
400
The sides of a square are 2 inches. The square is scaled by a factor of 5. What is the area of the scaled copy?
the area of the scaled copy is 100 inches squared
500
List 2 numbers that are reciprocals of each other
Answers will vary
500
The floorplan of a house was drawn using a scale of 2 cm : 5 m. Find the actual dimensions for the following room.
- Living Room is 6 cm by 4.5 cm
15 m by 11.25 m
500
What is the scale factor if the original triangle has side lengths 3, 3, and 3 and the scaled copy has side lengths 1, 1, and 1.
1/3
500
Which of the following are scaled copies of the original figure?
C & D
500
Sarah enlarged a rectangular photograph by a scale factor of 5. The area of the enlarged photo is how many times as large as the area of the original?
25 times