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

Figure G is the result of a transformation on Figure F. Which transformation would accomplish this?

Solution

From the image, Figure GG is the result of a transformation on Figure FF. Let's analyze the transformations:

  • Figure FF is located below the x-axis (in the third quadrant), while Figure GG is above the x-axis (in the second quadrant).
  • Rotation: Since Figure FF 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:

  1. A rotation 90° counterclockwise about the origin:

    • This would place the figure from quadrant III to quadrant II, which matches the movement of Figure FF to Figure GG.
  2. 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.
  3. A rotation 90° clockwise about the origin:

    • A clockwise rotation would place the figure in quadrant IV, which is incorrect.
  4. 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:

  1. How can you confirm a 90° counterclockwise rotation on a coordinate plane?
  2. What are the properties of rotation about the origin in geometry?
  3. How do you find the image of a point after a 90° counterclockwise rotation?
  4. What is the difference between rotation and reflection in transformations?
  5. How do translations affect coordinates compared to rotations?

Tip: When rotating a figure counterclockwise by 90° around the origin, switch the coordinates (x,y)(x, y) to (y,x)(-y, x).

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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