Answer:
80 degrees
Step-by-step explanation:
one half of the circle makes a straight line and that will equal 180 degrees so 60+45=105
180-105=80
so the missing angle is x=80
x = 75 degrees
60 + 60 = 120
45 + 45 = 90
120 + 90 = 210
360 - 210 = 150
150 / 2 =75 degrees
