Math Problem Statement

CHOOSE THE BEST CORRECT ANSWER!

Describe the transformation in the diagram. Choose the best correct answer!

Solution

The image shows a transformation of the triangle ABC to A'B'C'. Let's determine the type of transformation that has occurred.

The original points are:

  • A(4,2)A(-4, -2)
  • B(3,1)B(-3, -1)
  • C(1,2)C(-1, -2)

The transformed points are:

  • A(2,4)A'(2, -4)
  • B(1,3)B'(1, -3)
  • C(2,1)C'(2, -1)

Let's analyze the transformation step-by-step:

Checking Rotation:

  1. Observe the movement of the points relative to the origin (0, 0).
  2. Notice that the orientation of the figure has changed in a way that indicates a rotation.
  3. Specifically, each point has been moved to a new location that is consistent with a 90° clockwise rotation about the origin.

To verify this, apply a 90° clockwise rotation formula:

  • The transformation for a 90° clockwise rotation about the origin is: (x,y)(y,x)(x, y) \to (y, -x)

  • Applying this to each point:

    • For A(4,2)A(-4, -2): (4,2)(2,4)=A(2,4)(-4, -2) \to (-2, 4) = A'(2, -4)
    • For B(3,1)B(-3, -1): (3,1)(1,3)=B(1,3)(-3, -1) \to (-1, 3) = B'(1, -3)
    • For C(1,2)C(-1, -2): (1,2)(2,1)=C(2,1)(-1, -2) \to (-2, 1) = C'(2, -1)

The transformation is a 90° clockwise rotation about the origin.

Conclusion:

The correct answer is:

"90° clockwise rotation about the origin".

Do you want more details or have any questions?

Here are some related questions you might find helpful:

  1. How do you determine if a transformation is a reflection, rotation, or translation?
  2. What is the difference between a 90° clockwise and a 90° counterclockwise rotation?
  3. How can you apply rotation formulas to points without a graph?
  4. What are the steps to determine the center of rotation for a given transformation?
  5. How would you describe the transformation if the figure was rotated 180° instead?

Tip: When working with rotations, remember that rotating a point (x,y)(x, y) involves swapping and/or negating the coordinates depending on the direction and angle of the rotation.

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Math Problem Analysis

Mathematical Concepts

Geometric Transformations
Rotations
Coordinate Geometry

Formulas

90° clockwise rotation: (x, y) -> (y, -x)

Theorems

Rotation Theorem about the origin

Suitable Grade Level

Grades 8-10