What is the value of X and Y?

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

When you answer this can you explain

What is the relationship between all triangles that can be drawn given the same three angles