Question

Which triangle is similar to triangle AB ?

Answer 1

The triangle on the top right in he picture. This is because one of the interior angles is 61, and one of the other interior angles is 44. You can figure out that the angle is 44 because on the top picture the exterior angle is 126. And 180-126=44

Answer 2

Top left; you get 54 from doing 180-126 and then you do 180-61-54 to get 65