What's the Scale?
Vocabulary
X =
Grab Bag
Keys & Scales
100
The scale factor from triangle DEF to triangle D`E`F`is ...
What is 1.5 cm?
100
It's the definition of scale factor?
What is the factor by which every side length in an original figure is increased or decreased to create a scaled copy?
100
The value of the unknown side length x is ...
What is x = 2.5?
100
True/False
The corresponding angles of similar figures are always congruent.
What is true?
100
A map has a scale of 2 cm = 15 miles. A trip will be 7 cm on the map, the actual distance will be ...
What is 52.5 miles?
200
Triangle ABC has sides measuring 5, 6, and 7 cm. Triangle DEF has sides measuring 12.5, 15, and 17.5 cm. What is the scale factor?
What is 2.5?
200
It's the definition of similar.
What is when an image maintains shape but increases or decreases in size?
200
The value of the unknown side length x is ...
What is x = 7?
200
This rule is used to create an image:
(x, y) --> (x + 2, y - 1)
Describe what happens based on this rule.
What is the image is moved 2 units right and 1 unit down?
200
!!DOUBLE JEOPARDY!!
A blueprint has a scale of 2 cm = 6 feet. A house is 30 feet wide, the blueprint will be this distance in centimeters ...
What is 10 cm?
300
The scale factor from triangle NPW to triangle N`P`W`is ...
What is 1/4?
300
It's the definition of corresponding parts.
What is the matching angles or sides on similar figures?
300
The value of the unknown side length ? is ...
What is ? = 20?
300
True/False
The rule (x, y) --> (5x + 3, 6y + 4) is used to transform a figure. The image created would be similar to the original.
What is false?
300
The scale of a rectangle is 3 inches by 5 inches. The image was scaled by a factor of 2. This is the new area.
What is 60 sq. in?
400
Rectangle ABCD is similar to rectangle FGHI. The perimeter of rectangle FGHI is 50% the perimeter of ABCD. What was the scale factor from ABCD to FGHI?
What is 1/2?
400
!!DOUBLE JEOPARDY!!
It's the definition of congruent.
What is equal or identical?
400
The value of the unknown side length ? is ...
What is ? = 20?
400
True/False
Multiplying by a scale factor less than 1 causes an enlargement.
What is false?
400
A rectangle is drawn below on the grid. If a scale factor of 1/2 is applied, the perimeter of the copy is ....
What is 9 units?
500
ABC and DEF are similar. The area of DEF is 16 times larger than the area of ABC. What was the perimeter?
What is 4?
500
It's the name of these types of images made famous by MC Escher.
What is a tessellation?
500
The value of the ?
What is ? = 14?
500
The value of x.
What is x = 65 degrees.
500
The rule (3x + 1/2, 3y - 3/4) is applied to a polygon. These are the new coordinates of the original point (5, 3).
What is (15.5, 8.25)?