What is a dilation in geometry?
Dilations and Scale Factor A

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•
Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A dilation is a transformation that alters the size of a figure but maintains its shape, either enlarging or reducing it.
2.
FLASHCARD QUESTION
Front
What happens to a figure when the scale factor is greater than 1?
Back
The figure enlarges.
3.
FLASHCARD QUESTION
Front
What happens to a figure when the scale factor is less than 1 but greater than 0?
Back
The figure reduces.
4.
FLASHCARD QUESTION
Front
What is the scale factor in a dilation?
Back
The scale factor is a number that describes how much a figure is enlarged or reduced during a dilation.
5.
FLASHCARD QUESTION
Front
If a triangle has vertices at (1, 2), (4, 2), and (1, 5), what are the new coordinates after a dilation with a scale factor of 2 centered at the origin?
Back
The new coordinates are (2, 4), (8, 4), and (2, 10).
6.
FLASHCARD QUESTION
Front
If a dilation has a scale factor of 1, what happens to the figure?
Back
The figure remains unchanged.
7.
FLASHCARD QUESTION
Front
What is the effect of a negative scale factor in a dilation?
Back
A negative scale factor reflects the figure across the origin and may also change its size.
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