How would you describe this series of transformations? (1 point) Responses Rotation of 90 degrees clockwise and then reflection across the x -axis shows that triangle ABC is congruent to triangle A′′B"C" . Rotation of 90 degrees clockwise and then reflection across the x -axis shows that triangle upper A upper B upper C is congruent to triangle upper A double prime upper B double prime upper C double prime . Reflection across the y -axis and then a translation of (−3,−5) shows that triangle ABC is congruent to triangle A′′B"C" . Reflection across the y -axis and then a translation of left parenthesis negative 3 comma negative 5 right parenthesis shows that triangle upper A upper B upper C is congruent to triangle upper A double prime upper B double prime upper C double prime . Translation of (2,0) and then reflection across the x -axis shows that triangle ABC is congruent to triangle A′′B"C" . Translation of left parenthesis 2 comma 0 right parenthesis and then reflection across the x -axis shows that triangle upper A upper B upper C is congruent to triangle upper A double prime upper B double prime upper C double prime . Since triangles ABC and A′′B"C" do not have the same orientation, they are not congruent.

1 answer

The series of transformations described indicates a process of geometric manipulation applied to triangle ABC to produce triangle A′′B′′C′′. The transformations can be outlined as follows:

  1. Rotation and Reflection: The first transformation involves rotating triangle ABC 90 degrees clockwise and then reflecting it across the x-axis. This indicates that the resulting triangle A′′B′′C′′ has been repositioned and flipped. This could indeed show congruence, but the orientation differs, meaning although they have the same shape and size, they do not have the same orientation (they may be mirror images).

  2. Reflection and Translation: The second transformation involves reflecting triangle ABC across the y-axis first, followed by a translation of (-3, -5). Similarly, the resulting triangle A′′B′′C′′ is congruent to triangle ABC in terms of size and shape as they have followed the rules of transformation. However, the orientation may also differ based on the sequence of these operations.

  3. Translation and Reflection: The third transformation describes a translation of (2, 0) followed by a reflection across the x-axis, leading to triangle A′′B′′C′′. This process may also indicate congruence because the size and shape are preserved, but once again the orientation needs to be considered.

Overall, the key conclusion drawn from these transformations is that while triangles ABC and A′′B′′C′′ maintain congruence in terms of shape and size through these transformations, they end up with different orientations. This results in the finding that triangles ABC and A′′B′′C′′ are not congruent due to their differing orientations. To summarize, various transformations such as rotations, reflections, and translations can maintain congruence, but the orientation affects whether they can be considered congruent in a strict sense.

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