The statement about the the original and transformed triangles that must be true is The triangles are congruent.
Why are the triangles congruent?
Triangles are congruent when they are the same size and shape even if they face different directions.
When triangles undergo the translation and rotation, they do not change size and neither do they change shape.
This means that if a triangle undergoes a translation followed by a reflection, the result would still be congruent with the first triangle.
Find out more on congruent triangles at https://brainly.com/question/12404297
#SPJ1
