What is a dilation in geometry?
Dilations

Flashcard
•
Mathematics
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A transformation that produces a figure similar to the original but with a different size, using a scale factor.
2.
FLASHCARD QUESTION
Front
What is the scale factor in a dilation?
Back
A number that scales, or multiplies, the dimensions of a figure during a dilation.
3.
FLASHCARD QUESTION
Front
What does it mean to dilate a figure by a scale factor of 3?
Back
Each point of the figure is moved away from the center of dilation by a distance that is three times its original distance.
4.
FLASHCARD QUESTION
Front
What is the center of dilation?
Back
A fixed point in the plane about which all points are expanded or contracted during a dilation.
5.
FLASHCARD QUESTION
Front
If a figure is dilated by a scale factor of 1, what happens to the figure?
Back
The figure remains unchanged in size; it is congruent to the original.
6.
FLASHCARD QUESTION
Front
What mathematical operation is used with the scale factor in a dilation?
Back
Multiplication.
7.
FLASHCARD QUESTION
Front
How do you find the coordinates of a dilated point?
Back
Multiply the original coordinates by the scale factor.
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