Is it a scaled copy?
Vocab
Scale Factor
Scaling, Area, Maps, OH my
Miscellaneous Practice
100
A scaled copy.
A copy of a figure where every length in the original figure is multiplied by the same numbers?
100
When part of an original figure matches up with part of a copy
Corresponding Parts
100
the number we multiply the original figure by to get the scale copy
Scale factor
100
The area of a quadrilateral/rectangle.
lw (length x width)
bh (base x height)
100
Quadrilateral A has side lengths of 2, 3, 4, and 6. Quadrilateral B has side lengths of 18, 27, 36, and 54.
Are quadrilaterals A and B scaled copies?
yes, scale factor is 9.
200
Is this a scale copy? Why?
Yes, because all sides are multiplied by a scale factor of 3.
200
PS-KF
KR-GS
FR-GP
Angle G- Angle R
Angle S-Angle K
Angle F- Angle P
200
The scale factor is greater than 1.
The scaled copy will be larger than the original.
200
The area of a triangle.
bh/2 or 1/2 bh
200
Zac is building a 1:35 scale model of a spaceship. The height of his model is 18 inches, what is the height of the actual spaceship?
630 inches
300
Are these scaled copies? Explain.
No. There's no scale factor.
300
Define reciprocal.
The inverse of a number.
300
What is the scale factor from figure 1 to figure 2?
3
300
A scale drawing of a rectangular park is 7 inches wide by 9 inches long. The actual park is 2,520 yards long. What is the width of the actual park?
1,960 yards
300
The distance between Phoenix and the Grand Canyon, on a map, is 8 centimeters. The actual distance between Phoenix and the Grand Canyon using a scale of 1cm:10 mi.
80 miles
400
Rectangle L measures 12 inches by 9 inches. Rectangle M is a scaled copy of Rectangle L. What could be one measurement pairs that could be the dimensions of Rectangle M.
4 inches; 3 inches
24 inches; 18 inches
36 inches; 27 inches
400
What 3 things does an image need to have to be a scaled copy?
1. Same shape
2. Corresponding sides increase or decrease by a SF
3. Corresponding angles are the same
400
What is the scale factor from Y to X?
1/3
400
A scale on the map states that 5 cm represents 10 km. The distance on the map (in centimeters) that represents an actual distance of 4 km.
2 cm
400
The actual distance between Atlanta and Birmingham is 180 miles. How far apart would the two cities be on a map that uses a scale of 5 in:60 mi?
15 inches
500
Quadrilateral A has angle measurements of 250, 400, 450, and 350.
Quadrilateral B has angle measurements of 500, 800,900, and 700.
No, scale copies have the exact same angle measurements.
500
Name two corresponding sides & find the scale factor:
SF: 1.5
XN and ZH
NY and HC
YJ and CS
XJ and ZS
500
What is the scale factor from the smaller figure to the larger figure?
1.5
500
The scale on the first map is 1 cm to 10 km. The distance from Clarksville to Kings Dominion on the map is 40 cm.
The scale on the second map is 1 cm to 50 km.
The distance from Clarksville to Kings Dominion the second map.
8 cm
500
Mrs. B would like to take all of her students to Walt Disney World. She knows the distance between Clarksville, MD and Orlando, Florida is 840 miles. The distance on the map is 10.5 inches.
What is the scale on the map she is using?
1 inch : 80 miles