Find the measure of angles 1,2 and 3

angle 1=75 angle 2=105 and angle 3= 35

Step-by-step explanation:

an triangle is equal to 180 so the small triangle you have to subtract 30 and 75 from 180 which gives you 75 and then the 2nd angle is 105 because when you bisects and angle so the angle 1 and 2 have to equal to 180 so you subtract 75 from 180 then you get 105. to fill it in you will have to subtract 40 and 105 from 180 then you get 34 for the 3rd angle