Answer:
2/3
Step-by-step explanation:




I hope it helped you
Answer: 113, 57, and 66
Step-by-step explanation:
The sum of all of the interior angles can be found using the formula S = (n - 2)*180. It is also possible to calculate the measure of each angle if the polygon is regular by dividing the sum by the number of sides.
4x-2=18
-2 on both sides
4x=16
divid by 4 on both sides
x= 4
so,it is the answer that you are looking for.please mark me as brainliest.