Answer:
answer shown below
Step-by-step explanation:
m of angle 1= 47⁰
m of angle 2= 137⁰
m if angle 3= 31⁰
find measure 1 by adding 90⁰+42⁰=133⁰ and subtract 180 from it to find 1
find measure 2 by subtracting 43 from 180
find measure 3 by adding measure 2 (137⁰) and 12⁰ together to get 138⁰ and subtract 180 to get 31⁰
hope this helps
