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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.
m is equal to 3. Need I say more?
Let x℅
so , 20×X/100=12
......x=1200/20 = 60 ℅ ...answer !
