Vocabulary
Corresponding Parts
Scale Factors
Scaled Copies
Random
Scales
100
Add 1500 points
A copy of a figure where every length in the original figure is multiplied by the same number
What is a scaled copy?
100
Add 1500 points
The point in Copy 1 that corresponds to point K in the original
What is point A?
100
Add 4000 points
The side lengths of the scaled copy if the original rectangle is 2 inches by 3 inches and the scale factor is 4.
What is 8 inches by 12 inches?
100
Add 2000 points
The operation we use to create scaled copies
multiplication
100
Add 2500 points- take away 500 points from 2 teams
When scaling a shape, what happens to the angles?
They stay the same
100
Add 5000 points- add 3000 points
A scale drawing of a rectangular park is 5 inches wide
and 7 inches long. The actual park is 280 yards long.
What is the area of the actual park, in square yards?
56,000
200
Add 2000 points
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
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The line segment in the original that corresponds with segment EF in Copy 1
What is segment OP?
200
Add 2000 points
The scale factor between the two scaled copies below
What is 2?
200
Add 1000 points- take 1000 points away from 2 teams
The length of the left side on the bottom polygon (they are scaled copies)
What is 3?
200
Add 500 points
When a scaled copy gets bigger, is the scale factor less than 1, equal to 1, or greater than 1?
Greater than 1
200
Add 5000 points- add 3000 points
A scale drawing of a rectangular parking lot is
6 inches long and 5 inches wide. The actual
parking is 240 feet long. What is the area of
the actual parking lot, in square feet?
48,000
300
Add 2000 points- take away 1000 points from 1 team
The number we multiply all the lengths in the original figure by to create a scaled copy
What is the scale factor?
300
Add 1000 points
The point that corresponds to point R
What is point C?
300
Add 2500 points- take 1500 points away from 1 team
The scale factor between the following two polygons
What is 3?
300
Add 3500 points-
This happens to a scaled copy of a square whose side lengths are 3, when the scale factor is 1.
The square should stay the same.
300
Add 2000 points- take away 1000 points from 1 team
What is the reciprocal of 8?
1/8
300
Add 3500 points- add 2000 points
The scale of a map says that 4 cm represents 5 km. What distance on the map (in centimeters) represents an actual distance of 35 kilometers?
28 cm
400
TRADE POINTS
A shape that is made of straight lines and is closed
What is a polygon?
400
Add 2000 points- take away 1000 points from 2 teams
The distance that corresponds to the distance between points B and D (hint- think segment)
What is the distance between points Q and S?
400
TRADE POINTS
The scale factor between the two polygons (they are scaled copies) Remember- A Scale Factor is a number you multiply.
What is 1/4?
400
Add 5000 points- take 1500 points away from 3 teams
How to find the scale factor going from the copy back to the original
What is taking the reciprocal?
400
TRADE POINTS
Dividing by 6 is the same as multiplying by...
1/6
400
Add 3,000 points- add 1500 points
The scale of a map says that 4 cm represents 5 km. What is the actual number of kilometers that is represented by 52 centimeters on the map?
65 km
500
Add 4000 points- add 1500 points
Dividing 1 by a number gives the _____________ of this number. You can also find this by flipping the numerator and denominator of a fraction. It is also called the multiplicative inverse.
What is a reciprocal?
500
Add 2000 points- take away 1000 points from 2 teams
The corresponding angle to angle ADC
What is angle PSR?
500
Add 6000 points- add 3000 points
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. Remember- A Scale Factor is a number you multiply.
What is 1/3?
500
TRADE POINTS
Are the two polygons scaled copies?
NO
500
Add 6000 points- add 2500 points
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
Add 10000 points- add 7500 points
Tyler has two different maps of Ohio. The scale on the first map is 1 cm to 10 km. The distance from Cleveland to Cincinnati is 40 cm. The scale on the second map is 1 cm to 50 km. What is the distance from Cleveland to Cincinnati on the second map? (Hint- Find the actual distance using the first map, and then use the scale for the second map to find the scale distance)
8 cm