Geometry Unit 4 Review Stella
Flashcard
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a translation in geometry?
Back
A translation is a geometric transformation that moves every point of a figure the same distance in a specified direction.
2.
FLASHCARD QUESTION
Front
How do you perform a reflection over the x-axis?
Back
To reflect a point (x, y) over the x-axis, the new coordinates become (x, -y).
3.
FLASHCARD QUESTION
Front
What is the scale factor in dilation?
Back
The scale factor is a number that scales, or multiplies, the dimensions of a figure. It is calculated by comparing the lengths of corresponding sides of the original and dilated figures.
4.
FLASHCARD QUESTION
Front
What is the algebraic rule for translating a point (x,y) to (x-4,y+5)?
Back
The algebraic rule indicates that to translate a point (x,y), you subtract 4 from the x-coordinate and add 5 to the y-coordinate.
5.
FLASHCARD QUESTION
Front
What does it mean to reflect a figure over the y-axis?
Back
Reflecting a figure over the y-axis means that for every point (x, y), the new point will be (-x, y).
6.
FLASHCARD QUESTION
Front
How do you rotate a figure 180° around the origin?
Back
To rotate a point (x, y) 180° around the origin, the new coordinates become (-x, -y).
7.
FLASHCARD QUESTION
Front
What are the coordinates of a point after a translation of (x,y)→(x+7,y-3)?
Back
The new coordinates will be (x+7, y-3).
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