Triangle F G H. Side F G is 5, side G H is 5, side F H is 6. Angle G is 74 degrees, angle H is 53 degrees, angle F is 53 degrees. Triangle J K L. Side J K is 10, K L is 10, J L is 12. Angle K is 74 degrees, angle L is 53 degrees, angle J is 53 degrees. They are similar because their corresponding angles are congruent and their corresponding sides are congruent.
They are similar because their corresponding angles are congruent and their corresponding sides are proportional in length.
They are not similar because their corresponding angles are not proportional in measure.
They are not similar because their corresponding sides are not proportional in length.