Answer;
-Same as it was before.
Explanation;
After a congruence transformation the area of a triangle would be the same as it was before.
-A congruence transformation or isometry is a type of transformation that doesn't change the size or shape of an object or figure, which means the area of the object is not altered. There are three main types of congruence transformations, these includes; reflections (flips), rotations (turns), and translations (slides).