Math Problem Statement

Which of these graphs shows the image of rectangle WXYZ after a rigid transformation? Select all that apply.

Solution

The problem involves analyzing the given transformations of rectangle WXYZWXYZ to determine which graphs represent a valid rigid transformation. A rigid transformation preserves the shape and size of the figure, meaning the distances between corresponding points remain the same, and angles are unchanged.

Steps to Analyze:

  1. Original Coordinates: From the provided graph of rectangle WXYZWXYZ:

    • W(3,6)W(3, 6)
    • X(3,2)X(3, 2)
    • Y(0,2)Y(0, 2)
    • Z(0,6)Z(0, 6)
  2. Rigid Transformations: Types of rigid transformations include translations, reflections, and rotations. These do not change the size or shape of the rectangle.

  3. Verification: Each of the answer options needs to be checked for:

    • Preservation of side lengths: The transformed rectangle must have the same dimensions as the original.
    • Correct correspondence: Verify each vertex is mapped correctly.

Observations from the Images:

  • First Option (Top Left): This appears to be a translation of the original rectangle downward and slightly to the right. All side lengths and orientation are preserved. Valid.
  • Second Option (Top Right): This shows a reflection across the yy-axis. The orientation is flipped, but distances and angles are preserved. Valid.
  • Third Option (Bottom Left): This is another rigid transformation, likely a 90° clockwise rotation around a point. Dimensions are preserved. Valid.
  • Fourth Option (Bottom Right): This seems to show an incorrect transformation where distances are not preserved, as the rectangle looks stretched or distorted. Not valid.

Final Answer:

The valid transformations are Top Left, Top Right, and Bottom Left.

Would you like further clarification or details about this process?


Here are 5 related questions to deepen your understanding:

  1. How can you mathematically confirm if a transformation is rigid using distance formulas?
  2. What are examples of non-rigid transformations?
  3. How does rotation affect the orientation of shapes on a coordinate plane?
  4. Can reflections across axes be combined into a single transformation?
  5. What are practical uses of rigid transformations in geometry?

Tip: When analyzing transformations, always check the distances between key points to ensure the transformation preserves the shape and size of the figure!

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Math Problem Analysis

Mathematical Concepts

Rigid Transformations
Geometric Reflections
Geometric Rotations
Coordinate Plane Geometry

Formulas

Distance formula: √((x2 - x1)^2 + (y2 - y1)^2)
Reflection rules: Over x-axis (x, y) → (x, -y), over y-axis (x, y) → (-x, y)
Rotation rules: 90°, 180°, 270° transformations on a plane

Theorems

Rigid Transformation Properties: Preservation of distance and angle measures
Congruence Theorem

Suitable Grade Level

Grades 6-8