the first one is a rotation because it has been moved around a little bit/rotation
second: translation
the second one you were correct on because it has just been moved/translated
third: reflection
the third one is a reflection because it is like the triangle is looking in a mirror and is a reflection
fourth: rotation
the fourth one is a tricky one because it is trying to make you thing that it is a reflection on the other side but it is actually a rotation because if it was a reflection it would be right below it, and it was just rotated around half way, so it is a rotation.
