Solve for the missing angle measurement ?

Answer:
75°
Step-by-step explanation:
180°-105°=75°
Hope this helps! :)
Answer:
75 degrees.
Step-by-step explanation:
The sum of both angles is 180 degrees, they are supplementary. Therefore, subtracting the measurement of the first angle from 180 will give you your answer.
180 - 105 = 75