A transformation that changes the size but not the shape of a geometric figure
What is dilation?
100
Preimage: (2, 2)
Image: (5, 5)
What is 2.5?
100
Preimage: (7, 2)
Scale factor: 10
What is (70, 20)
100
What is the definition of a congruent figure?
A figure having the same shape and the same size.
100
A relationship between two quantities in which the ratio of one quantity to the other quantity is constant.
What is a proportional relationship?
200
The center of the figure
What is center of dilation?
200
Preimage: (7, 8)
Image: (56, 64)
What is 8?
200
Preimage: (3, 8)
Scale factor: 5
What is (15, 40)
200
What are the 3 main characteristics of a similar figure?
A similar figure has the same shape, not the same size. The angles are the same. The sides are proportional.
200
A proportion
What is a statement that two ratios are equal?
300
Describes how much larger or smaller the image of a dilation is than the pre image
What is scale factor?
300
Preimage: (6, 3)
Image: (2, 1)
What is 1/2?
300
Preimage: (27, 37)
Scale factor: 2
What is (54, 74)
300
What are the symbols for similar and congruence?
(~ Similar), (~ over top of an equal sign, Congruence)
300
If we are given BUS is congruent to GUS, what can we say about the two triangles?
They are congruent. They are the same size.
400
True or false: dilation is how large an image is after it is enlarged or reduced.
False
400
Preimage: (46, 37)
Image: (23, 18.5)
What is 1/2?
400
Preimage: (28, 83)
Scale factor: 5
What is (140, 415)
400
If I have a triangle whose side lengths are 12, 18, 21 and another triangle whose side lengths are 4, 6, 7 are the two triangles similar?
yes
400
Chocolate fudge overload extra large donuts are on sale for $5.99 3/4 dozen. What is the cost of one donut?
What is $0.67?
500
A dilation is a ________ that changes the ________ but not the shape of a geometric figure.
transformation, size
500
Preimage: (53.7, 35.8)
Image: (161.1, 107.4)
What is 3?
500
Preimage: (222, 17)
Scale factor: 34
What is (7548, 578)
500
If we are given LAZY ~ QUIZ, which angle corresponds to <I?
<Z
500
Sadie buys 4 grams of titanium for a robotics project for $11. Quin buys 2.5 grams of the same titanium for the same robotics project for $6.25. Who gets the better deal.