Hi! I am practicing for the STAAR test, and I don't know how to do this question. If someone could get me started on how to do this or walk me through the steps, that would be helpful. :)

Determine whether angle-angle-angle (aaa) is a valid means for establishing triangle congruence. if it is a valid criterion, explain why. if it is not valid, use geogebra to create a counterexample demonstrating that it doesn’t work and give an explanation. if you construct a counterexample, take a screenshot of your work, save it, and insert the image in the space below.