Aaa (angle-angle-angle) guarantees congruence between two triangles. a. true b. false

That's false.

AAA only proves the two triangle similar.

You can have one triangle, shrink it, and yet it'll still have the same angle measurements.

The smaller triangle will not be congruent to the original triangle, but they will have congruent angles.

Thus, AAA does not prove triangles congruent but only similar.

Have an awesome day! :)