Math Problem Statement

A sequence of transformations maps ∆ABC to ∆A'B'C'. The sequence of transformations that maps ∆ABC to ∆A'B'C' is a reflection across the ___ followed by a translation ___ .

Solution

The problem shows two triangles, ABC\triangle ABC and ABC\triangle A'B'C', and asks for the sequence of transformations that maps ABC\triangle ABC to ABC\triangle A'B'C'. The transformation involves a reflection followed by a translation.

Analysis of the Reflection:

  • The original triangle, ABC\triangle ABC, is positioned in the second quadrant, while ABC\triangle A'B'C' is positioned in the first quadrant.
  • From the reflection choices, we can deduce that a reflection across the y-axis is needed because this would move the points from the left side of the y-axis to the right side.

Translation:

  • After the reflection, the reflected triangle would still be relatively close to the origin, while the triangle ABC\triangle A'B'C' is further along the positive x-axis.
  • To complete the transformation, a translation along the positive x-axis is needed to match the position of ABC\triangle A'B'C'.

Conclusion:

The sequence of transformations that maps ABC\triangle ABC to ABC\triangle A'B'C' is:

  • Reflection across the y-axis, followed by a translation to the right.

Let me know if you'd like more details or have any questions!

Here are 5 related questions to deepen your understanding:

  1. What happens when you reflect a figure across the x-axis instead of the y-axis?
  2. How can you determine the direction and distance of a translation from one triangle to another?
  3. Can any triangle be mapped to another triangle using a combination of reflections, rotations, and translations?
  4. How does a reflection across the line y=xy = x differ from one across the y-axis?
  5. What types of transformations are considered rigid transformations?

Tip: Reflections flip shapes across a specific line, changing their orientation, but translations preserve orientation and move them without flipping.

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Math Problem Analysis

Mathematical Concepts

Rigid Transformations
Reflections
Translations
Coordinate Geometry

Formulas

Reflection across the y-axis
Translation along the x-axis

Theorems

Rigid Transformation Theorem
Reflection Theorem

Suitable Grade Level

Grades 8-10