Answer:
131°
90°
60°
72°
Step-by-step explanation:
Sum of the interior angles of a triangle = 180°
Therefore, to find the missing angle, simply subtract the known values from 180°
180 - 24 - 25 = 131°
180 - 40 - 50 = 90°
180 - 60 - 60 = 60°
180 - 42 - 66 = 72°