Vocabulary
Scale Factor
Missing Sides
Perimeter and Area
Comparing Scales
100
What is a Scaled Copy?
A copy of an image where every length has been multiplied by one number (a scale factor)
100
The scale factor from triangle DEF to triangle D`E`F`is ...
1.5 CM
100
With a scale of 1'' to 5' there is a wall that is 20'. How big should the drawing be?
4''
100
A square with side lengths of 5 has been copied by a scale factor of 3. What is the new Perimeter?
60
100
If my scale factor is greater than one, the scaled copy will be... (equal, smaller, or larger)... than the original
Larger
200
Corresponding means...?
When part of an original matches up with part of a copy
200
If a scale factor of 1/2 is applied to a polygon will the shape get bigger or smaller?
smaller
200
A square has side lengths of 5. A scale factor of 3 is applied to make a new copy. What are the new side lengths?
The new side lengths are 15.
200
A square with side lengths of 5 has been copied by a scale factor of 3. What is the new area?
225
200
If my scale factor is less than one, the scaled copy will be... (equal, smaller, or larger)... than the original
smaller
300
What is a Scale Factor?
The single number you multiply all the side lengths by to get a scaled copy
300
If a scale factor of 2 is applied to a polygon, will it get smaller or larger?
Larger
300
The value of the unknown side length x is ...
What is x = 2.5?
300
When finding the area of a scaled copy, I multiply the original area by what...?
Scale Factor Squared
300
There is a physical pool and and scale drawing of the pool. One scaled drawing has a scale of 1000 feet to 1 inch and the other has a scale of 500 feet to 1 inch. Which is larger?
500 feet to 1 inch
400
To find the area...?
You add up all the blocks or multiply length by width
400
The scale factor from triangle NPW to triangle N`P`W`is ...
1/4 cm
400
The value of the unknown side length x is ...
What is x = 7
400
A shape's copy has an area of 16. The copy was enlarged by a scale factor of 2. What was the area of the original?
4
400
Which would be a larger scaled drawing of Utah, 1cm represents 50 miles or 1 cm represents 75 miles?
1 cm represents 50 miles
500
When you flip a fraction, you get a...
Reciprocal
500
When finding ______, I multiply the original ______ by the scale factor squared.
area
500
The value of the unknown side length ? is ...
What is ? = 20
500
The scale of a rectangle is 9 inches wide and 11 inches long. If the actual width is 36, then the actual area will be ...
1,584 sq. in
500
A blueprint has a scale of 2 cm = 6 feet. A house is 30 feet wide, the blueprint will be this distance in centimeters ...
10 cm