Question

can someone EXPLAIN to me how to do this problem

Answer 1

its SSS

Answer 2

first you prove all angles are equal, which is easy since all 3 add to 180 and they have 2 same angles, meaning the third is the same

Answer 3

the size of the angle determines the length of the side or vice versa

Answer 4

since all angles are equal, all sides must be same, therefore SSS