
Dilations
Authored by Brian Shortes
8th Grade
Used 8+ times

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24 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Triangle EFG is dilated with a scale factor of 1/2 to create ∆E'F'G'. The measure of ∠F' is 36°. What is m∠F?
18 °
36 °
72°
144°
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Triangle CAT is the image that resulted from a dilation of triangle RED.
(0,0)
R
C
D
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Triangle ABC is dilated to produce triangle A'B'C' with scale factor 3/4. Which describes the relationship between the two triangles?
∆A'B'C' is an enlargement of ∆ABC.
∆A'B'C' is a reduction of ∆ABC.
∆A'B'C' ≅ ∆ABC
∆A'B'C' is a mirror image of ∆ABC.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A triangle has vertices at (1, 1), (1, 2), and (3, 2). It is dilated by a scale factor of 3 with the origin as the center of dilation to form a similar triangle. What are the coordinates of the vertices of the image?
(4, 1), (4, 2), (6, 2)
(1, 4), (1, 5), (3, 5)
(4, 4), (4, 6), (6, 5)
(3, 3), (3, 6), (9, 6)
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Given ∆ABC ~ ∆ADE with AB = 2 centimeters, BD = 3 centimeters, and DE = 10 centimeters.
What is the length of BC ?
6 2/3 centimeters
5 centimeters
4 centimeters
6 centimeters
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the name of the point from which a dilation is drawn?
the vertex
the center of dilation
the origin of dilation
the corner
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A triangle is dilated with a center of dilation at the origin. Point P is on the figure and P' is the corresponding point on the image of the dilation. Point P is at (22, 3) and P' is at (28, 12). What is the scale factor?
2
4
6
9
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