Answer:
See below
Step-by-step explanation:
<u>Angle 4 is exterior angle of the triangle and as per definition:</u>
<u>Angle 4 is supplementary with angle 3, they sum up to straight angle of 180°</u>

Sure hope this helps you
<u><em>And please mark me brianiest if this is correct</em></u>
You should use a bar graph because that would work better