Math Problem Statement
What is the correct option? A rotation 90° counterclockwise about the origin
A translation 1 unit to the left and 9 units up
A rotation 90° clockwise about the origin
A translation 1 unit to the right and 9 units down
Solution
From the image, Figure is the result of a transformation on Figure . Let's analyze the transformations:
- Figure is located below the x-axis (in the third quadrant), while Figure is above the x-axis (in the second quadrant).
- Rotation: Since Figure is reflected across the x-axis and appears to have rotated from its original position, the correct transformation seems to be a rotation.
Check the options:
-
A rotation 90° counterclockwise about the origin:
- This would place the figure from quadrant III to quadrant II, which matches the movement of Figure to Figure .
-
A translation 1 unit to the left and 9 units up:
- This is a vertical and horizontal shift, but it wouldn't account for the rotation of the figure.
-
A rotation 90° clockwise about the origin:
- A clockwise rotation would place the figure in quadrant IV, which is incorrect.
-
A translation 1 unit to the right and 9 units down:
- Again, this only shifts the figure but does not rotate it.
Conclusion:
The correct transformation is a 90° counterclockwise rotation about the origin.
Would you like further details or have additional questions? Here are some related questions to explore:
- How can you confirm a 90° counterclockwise rotation on a coordinate plane?
- What are the properties of rotation about the origin in geometry?
- How do you find the image of a point after a 90° counterclockwise rotation?
- What is the difference between rotation and reflection in transformations?
- How do translations affect coordinates compared to rotations?
Tip: When rotating a figure counterclockwise by 90° around the origin, switch the coordinates to .
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Math Problem Analysis
Mathematical Concepts
Geometry
Transformations
Rotations
Formulas
90° Counterclockwise Rotation Formula: (x, y) -> (-y, x)
Theorems
Rotation Theorem: Rotating a figure 90° counterclockwise about the origin results in a coordinate transformation from (x, y) to (-y, x)
Suitable Grade Level
Grades 8-10
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