Dilations
Flashcard
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a dilation in geometry?
Back
A dilation is a transformation that alters the size of a figure but keeps its shape, defined by a center of dilation and a scale factor.
2.
FLASHCARD QUESTION
Front
What is the center of dilation?
Back
The center of dilation is a fixed point in the plane about which all points are expanded or contracted during a dilation.
3.
FLASHCARD QUESTION
Front
What is a scale factor in dilation?
Back
The scale factor is a number that describes how much a figure is enlarged or reduced during a dilation.
4.
FLASHCARD QUESTION
Front
If the scale factor is greater than 1, what happens to the figure?
Back
The figure is enlarged.
5.
FLASHCARD QUESTION
Front
If the scale factor is between 0 and 1, what happens to the figure?
Back
The figure is reduced.
6.
FLASHCARD QUESTION
Front
How do you find the coordinates of a dilated point?
Back
Multiply the distance from the center of dilation to the original point by the scale factor and then add the coordinates of the center of dilation.
7.
FLASHCARD QUESTION
Front
What are the coordinates of point B' if B(4, 3) is dilated by a scale factor of 3 with the origin as the center?
Back
B' = (12, 9)
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