Math Problem Statement

Which sequences of transformations map ABCD onto A'B'C'D'? Select all that apply.

Solution

The problem in the image involves mapping quadrilateral ABCDABCD onto ABCDA'B'C'D' using sequences of transformations such as translations, reflections, and rotations.

Explanation of each option:

  1. Reflection across the x-axis followed by a translation left 8 units and up 2 units:

    • A reflection across the x-axis flips the figure over the x-axis.
    • After this, translating left by 8 units and up by 2 units seems to correctly move ABCDABCD onto ABCDA'B'C'D'.
    • This sequence is valid.
  2. Translation left 3 units and down 2 units followed by a 180° rotation around the origin:

    • Translating left 3 units and down 2 units moves the figure, and a subsequent 180° rotation around the origin flips and relocates it to match ABCDA'B'C'D'.
    • This sequence is also valid.
  3. Reflection across the y-axis followed by a translation right 3 units and up 10 units:

    • A reflection across the y-axis reverses the orientation over the y-axis.
    • After the reflection, translating right 3 units and up 10 units properly moves ABCDABCD onto ABCDA'B'C'D'.
    • This sequence is valid as well.
  4. Rotation 180° around the origin followed by a translation right 3 units and up 2 units:

    • A 180° rotation around the origin flips ABCDABCD upside down.
    • Translating right 3 units and up 2 units afterward moves the figure to the final position of ABCDA'B'C'D'.
    • This sequence is valid.

Conclusion:

All four selected options are correct sequences that map quadrilateral ABCDABCD onto ABCDA'B'C'D'.

Would you like further clarification on any of the transformations?

Related Questions:

  1. How do you perform a reflection across the x-axis?
  2. What is the effect of a 180° rotation around the origin?
  3. How can you determine the correct translation after a reflection?
  4. What are the differences between reflecting over the x-axis and y-axis?
  5. How does the orientation of the figure change after a 180° rotation?

Tip:

When working with transformations, sketching the steps one by one can help visualize how each movement affects the shape's position.

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Math Problem Analysis

Mathematical Concepts

Geometric transformations
Translations
Reflections
Rotations

Formulas

Translation formula: (x, y) → (x + a, y + b)
Reflection over x-axis: (x, y) → (x, -y)
Reflection over y-axis: (x, y) → (-x, y)
Rotation 180° around the origin: (x, y) → (-x, -y)

Theorems

Congruence theorem in geometric transformations
Symmetry properties of transformations

Suitable Grade Level

Grade 8