Answer :
D.) △ABC is congruent to △A′B′C′ because you can map △ABC to △A′B′C′ using a reflection across the y-axis, which is a rigid motion.
Answer:
D.) △ABC is congruent to △A′B′C′ because you can map △ABC to △A′B′C′ using a reflection across the y-axis, which is a rigid motion.
Step-by-step explanation:
Two regular geometric figures, in particular two triangles, are congruent when their sides have exactly the same lengths and the same measured angles.
A reflection is a rigid movement that does not alter the lengths of the sides or the measures of the angles. The triangle △A'B'C' is obtained from a reflection of the triangle △ ABC through the Y axis.