Answer:
105 Degrees
Step-by-step explanation:
Angle 3 is 105 degrees because it is cut in half on a striaght line. A line is 180 degrees so you subtract 75 from 180 and you get 105
105°
To find an exterior angle, subtract the interior angle from 180.
180 - 75 = 105
Therefore, angle 3 is 105°.
Let me know if I did something wrong.
