# math

posted by
**chris verwer**
.

(n-2)*180 =108n

180 n - 108 n = 360

72 n = 360

n = 5

drwls, I had totally misread the problem and thought it said

(n-2)^180 =108n

been working on it for almost an hour, trying Newton's method and all kinds of iteration.

I really have to try to read the questions more carefully, ha ha

You will have to use a graphical or iterative method (like Newton's) to solve that. There is no explicit closed-form answer.

(n-2)^180 =108n

If n = 3.03, you get 204 (left) & 327 (right)

If n = 3.04, you get 1164 (left) and 328 (right)

If n = 3.0326, you get 322 on the left and 327 on the right

The answer is 3.0327...