Answer:
Step-by-step explanation:
Angle 1: 180-72= 108
108 degrees
Angle 2: total degree for the triangle is 180.
108+38=146 180-146=34
34 degree
angle 3: 42+38=80
180-80=100
100 degrees
So to find a percent of increase you have to put the current number minus previous number(in this case 20-16) over the previous number(16 in this case) and multiply by 100.
So we have 20-16/16 multiplied by 100.
Since 4/16= 0.25,multiplying It by 100 gives you 25.
So the answer is 25%
It would be, 33%.
Hope this helps!
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