If D E F is similar to A B C, what is the similarity ratio of Triangle D E F to triangle A B C? Triangles A B C and D E F. Side A B is 8, B C is 6, and A C is blank. Side D E is 12, E F is 9, and D F is blank. If D E F is similar to A B C, what is the similarity ratio of Triangle D E F to triangle A B C? 2:3 3:4 4:3 3:2