7+ Unit 4 Flashcard Study Guide: Rigid Transformations
Flashcard
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a rigid transformation?
Back
A rigid transformation is a transformation that preserves the shape and size of a figure. Examples include translations, rotations, and reflections.
2.
FLASHCARD QUESTION
Front
What does it mean to translate a figure?
Back
To translate a figure means to slide it in a straight line from one position to another without changing its shape or orientation.
3.
FLASHCARD QUESTION
Front
How do you reflect a point over the y-axis?
Back
To reflect a point (x, y) over the y-axis, change the sign of the x-coordinate. The new point will be (-x, y).
4.
FLASHCARD QUESTION
Front
What is the pre-image in a transformation?
Back
The pre-image is the original figure before any transformation is applied.
5.
FLASHCARD QUESTION
Front
What is the image in a transformation?
Back
The image is the resulting figure after a transformation has been applied to the pre-image.
6.
FLASHCARD QUESTION
Front
Describe a reflection across the x-axis.
Back
A reflection across the x-axis changes the sign of the y-coordinate of each point. For example, (x, y) becomes (x, -y).
7.
FLASHCARD QUESTION
Front
What are the coordinates after a 180° rotation of point (x, y)?
Back
After a 180° rotation, the coordinates (x, y) become (-x, -y).
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