Unit 1 Flashcard 1: lesson 1 - 7
Flashcard
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a transformation in geometry?
Back
A transformation is an operation that moves or changes a figure in some way to produce a new figure.
2.
FLASHCARD QUESTION
Front
What is a reflection in geometry?
Back
A reflection is a transformation that flips a figure over a line to produce a mirror image.
3.
FLASHCARD QUESTION
Front
What does it mean to rotate a figure?
Back
To rotate a figure means to turn it around a fixed point by a certain angle.
4.
FLASHCARD QUESTION
Front
What is a rigid transformation?
Back
A rigid transformation is a transformation that does not change the shape or size of a figure.
5.
FLASHCARD QUESTION
Front
What is the angle of rotation for a 90° counterclockwise rotation?
Back
A 90° counterclockwise rotation turns a figure 90 degrees to the left around a fixed point.
6.
FLASHCARD QUESTION
Front
What is the effect of a reflection over the x-axis?
Back
A reflection over the x-axis flips the figure vertically, changing the sign of the y-coordinates.
7.
FLASHCARD QUESTION
Front
What is the effect of a reflection over the y-axis?
Back
A reflection over the y-axis flips the figure horizontally, changing the sign of the x-coordinates.
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