Question

triangle def is congruent to △ghj by the sss theorem. which rigid transformation is required to map △def onto △ghj?
options: dilation, reflection, translation, rotation

Explanation:

Step1: Analyze Transformation Types

Dilation changes size (not congruent), so eliminate dilation. Reflection flips over a line, rotation turns around a point, translation slides.

Step2: Compare Triangles' Position

△DEF and △GHJ have same orientation, just shifted. Translation moves without rotating/reflection. So translation is correct.

Answer:

translation