I need to know how to do this math

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.

Find the perimeter of each of the two noncongruent triangles where a = 15, b = 20, and a = 29°

Carla is cutting pieces of string that are exactly 24 3/8 inches long. how many pieces can she cut from a ball of string that’s is 100 feet?