## Discussion Forum

### 2018 ZIML JV Problem 6

2018 ZIML JV Problem 6

The problem is:

A convex polygon with nn sides has interior angles of

30,60,90,,n30.30∘,60∘,90∘,…,n⋅30∘.
What is the sum of all possible nn?

The solution says that the answer is 3+8=11. However, the answer should actually be 3, because if n=8 then the polygon would not be convex.

Re: 2018 ZIML JV Problem 6

I double checked the wording this morning and we have updated the problem to have $3$ as the correct answer. The winners list has been updated to reflect this change. (This update did not remove any winners, only added some winners.)