The graph shows triangle 𝐴𝐵𝐶 in the coordinate plane. The transformation 𝑇 is defined as 𝑇(𝑥,𝑦)→(12𝑥−4,12𝑦+3). Triangle 𝐴′𝐵′𝐶′ (not shown) is the image of triangle 𝐴𝐵𝐶 under transformation 𝑇.QuestionWhich of the following statements about triangle 𝐴𝐵𝐶 and triangle 𝐴′𝐵′𝐶′ is true?ResponsesThe triangles are congruent but not similar because transformation 𝑇 is a rigid motion transformation.Answer A: The triangles are congruent but not similar because transformation T is a rigid motion transformation.AThe triangles are congruent and similar because transformation 𝑇 is a similarity transformation with a scale factor that is equal to 1.Answer B: The triangles are congruent and similar because transformation T is a similarity transformation with a scale factor that is equal to 1 .BThe triangles are similar but not congruent because transformation 𝑇 is a similarity transformation with a scale factor that is less than 1.Answer C: The triangles are similar but not congruent because transformation T is a similarity transformation with a scale factor that is less than 1 .CThe triangles are similar but not congruent because transformation 𝑇 is a similarity transformation with a scale factor that is greater than 1.
Question
The graph shows triangle 𝐴𝐵𝐶 in the coordinate plane. The transformation 𝑇 is defined as 𝑇(𝑥,𝑦)→(12𝑥−4,12𝑦+3). Triangle 𝐴′𝐵′𝐶′ (not shown) is the image of triangle 𝐴𝐵𝐶 under transformation 𝑇.QuestionWhich of the following statements about triangle 𝐴𝐵𝐶 and triangle 𝐴′𝐵′𝐶′ is true?ResponsesThe triangles are congruent but not similar because transformation 𝑇 is a rigid motion transformation.Answer A: The triangles are congruent but not similar because transformation T is a rigid motion transformation.AThe triangles are congruent and similar because transformation 𝑇 is a similarity transformation with a scale factor that is equal to 1.Answer B: The triangles are congruent and similar because transformation T is a similarity transformation with a scale factor that is equal to 1 .BThe triangles are similar but not congruent because transformation 𝑇 is a similarity transformation with a scale factor that is less than 1.Answer C: The triangles are similar but not congruent because transformation T is a similarity transformation with a scale factor that is less than 1 .CThe triangles are similar but not congruent because transformation 𝑇 is a similarity transformation with a scale factor that is greater than 1.
Solution
Para resolver esta pregunta, sigamos los siguientes pasos:
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Entender la transformación: La transformación está definida como .
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Identificar el tipo de transformación: La transformación dada no es una transformación rígida (como una traslación, rotación o reflexión) porque incluye un factor de escala (12) que cambia el tamaño de las coordenadas e .
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Determinar el factor de escala: El factor de escala en esta transformación es 12, ya que tanto como se multiplican por 12.
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Evaluar la congruencia y similitud:
- Congruencia: Dos figuras son congruentes si tienen la misma forma y tamaño. Dado que la transformación incluye un factor de escala diferente de 1, las figuras no serán del mismo tamaño.
- Similitud: Dos figuras son similares si tienen la misma forma pero no necesariamente el mismo tamaño. Dado que la transformación incluye un factor de escala, las figuras serán similares pero no congruentes.
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Conclusión: La transformación es una transformación de similitud con un factor de escala mayor que 1 (específicamente, 12). Por lo tanto, los triángulos y serán similares pero no congruentes.
La respuesta correcta es: D: The triangles are similar but not congruent because transformation is a similarity transformation with a scale factor that is greater than 1.
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