50 points PLEASE HELP ASAP

1, 2, 3, 6, 7, 8, 9, 11, and 12

Step-by-step explanation:

The angles that I states already have two sides)angles that the markings tell you are the exact same. some of them have a square which means it is 90 degrees and a dash on one side and the same dash on the other triangle meaning that both triangles have two sides equal to each other which means the last angle will also have to be equal. 5 might also be congruent based on the markings, but the triangle itself look different to me so you are free to determine that for yourself. I could be wrong but this is the best I could do.

whats the