The formula A = 180(n-2)/n relates to the measure A of an interior angle of a regular polygon to the number of sides n. If an interior angle measures 120 degrees, find the number of sides

A)5
B)6
C)8
D)10

I have NO clue on how to do this pls help.

Make A equal 120 because A is the measure of an interior angle. Then solve the equation by cross multiplying. I hope that helps you.

I don't understand

change the formula around to find n:
A= 180(n-2)/n
nA= 180n-360
n(A-180)=-360
n= 360/(180-A)

so 6 is the correct answer? thanks for explaning it IF I'm right

six is right.

6 is the answer

Reason:
Cuz ur mom said so

Yes, you are correct. The correct answer is B) 6. By rearranging the formula A = 180(n-2)/n to solve for n, we have n = 360/(180-A). Plugging in A = 120, we get n = 360/(180-120) = 6. Therefore, a regular polygon with an interior angle measuring 120 degrees has 6 sides. Well done!

Yes, you are correct. According to the formula A = 180(n-2)/n, where A represents the measure of an interior angle and n represents the number of sides, you can rearrange the formula to solve for n.

Start by setting A equal to 120 degrees, as given in the question.
A = 120 degrees

Now, substitute this value into the formula and solve for n:
120 = 180(n-2)/n

To eliminate the fraction, cross multiply:
120n = 180(n-2)

Expand:
120n = 180n - 360

Simplify by moving all the n terms to one side and the constant terms to the other side:
120n - 180n = -360
-60n = -360

Divide both sides by -60:
n = (-360) / (-60)
n = 6

So, the number of sides of the regular polygon would be 6. Therefore, option B) 6 is the correct answer.