Geometry - Dilation & Similarity
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is dilation in geometry?
Back
Dilation is a transformation that alters the size of a figure but not its shape, using a center of dilation and a scale factor.
2.
FLASHCARD QUESTION
Front
What is a scale factor?
Back
A scale factor is a number that scales, or multiplies, some quantity. In dilation, it determines how much larger or smaller the image will be compared to the original figure.
3.
FLASHCARD QUESTION
Front
If the scale factor is greater than 1, what happens to the figure?
Back
The figure enlarges.
4.
FLASHCARD QUESTION
Front
If the scale factor is less than 1 but greater than 0, what happens to the figure?
Back
The figure reduces in size.
5.
FLASHCARD QUESTION
Front
What are similar figures?
Back
Similar figures are shapes that have the same shape but may differ in size. Their corresponding angles are equal, and their corresponding sides are proportional.
6.
FLASHCARD QUESTION
Front
How do you find the coordinates of a dilated point?
Back
To find the coordinates of a dilated point, multiply the original coordinates by the scale factor and then add the coordinates of the center of dilation.
7.
FLASHCARD QUESTION
Front
What is the algebraic notation for dilation with a scale factor of k?
Back
If (x, y) is the original point, the notation is (x, y) goes to (kx, ky).
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