Answer:
We have that 
Step-by-step explanation:
We have just to replace n=10 on the general equation

Therefore:

Answer:
n = 6
Step-by-step explanation:
the formula for interior angle is ( n-2)
but we given the measure of one angle, so solve
720 = (n - 2)180
720/180 = (n - 2)
4 = (n - 2)
combine the like terms
4 + 2 =n
6 = n
Answer:
the correct answer is
D the student solved the problem. correctly