Podcast
Questions and Answers
What is the transformation of a 90° clockwise rotation for the point (x,y)?
What is the transformation of a 90° counterclockwise rotation for the point (x,y)?
What is the transformation of a 270° clockwise rotation for the point (x,y)?
What is the transformation of a 270° counterclockwise rotation for the point (x,y)?
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What happens to the coordinates (x,y) when reflected over the y-axis?
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What happens to the coordinates (x,y) when reflected over the x-axis?
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What is the transformation for the equation y = x?
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What is the transformation for the equation y = -x?
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What is the transformation for a 180° rotation (clockwise/counterclockwise) for the point (x,y)?
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Study Notes
Rotations
- A 90° clockwise rotation transforms the point (x, y) to (y, -x).
- A 90° counterclockwise rotation changes the point (x, y) to (-y, x).
- A 270° clockwise rotation results in the same transformation as a 90° counterclockwise rotation: (x, y) to (y, -x).
- A 270° counterclockwise rotation results in the same transformation as a 90° clockwise rotation: (x, y) to (-y, x).
Reflections
- Reflecting over the y-axis changes the x-coordinate: (x, y) becomes (-x, y).
- Reflecting over the x-axis changes the y-coordinate: (x, y) becomes (x, -y).
Line Transformations
- The line represented by y = x swaps the coordinates, transforming (x, y) to (y, x).
- The line represented by y = -x negates both coordinates, transforming (x, y) to (-y, -x).
180° Rotation
- A 180° rotation, whether clockwise or counterclockwise, changes the point (x, y) to (-x, -y).
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Description
Test your knowledge of geometric transformations with this set of flashcards! Each card covers different types of rotations and reflections, providing definitions and transformations for better understanding. Perfect for students looking to reinforce their grasp of these crucial concepts in geometry.
