Melody

5*3=15

I graphed it to scale and also got 40 degrees.

180(n-2)=1070+m     where m<180  and   (1070+m)mod180=0

n-2=(1070+m)/180

n-2=5+(170+m)/180

m=10

n-2=5+(170+10)/180

n-2=5+1

n-2=6

n=8

that is great :)

I'd like to see an answer to this one too.  

Please do not ask, or answer, aops   (art of problem solving)  questions.

Thank you.

Thanks Ginger, and thanks for the compliment.

That was a great interactive thread between the 2 of us :)

Answered here:

Thanks for the link Ginger

thanks asinus :)

Here is the graphs

one post = one question.

Do not post all your homework for other people to do for you.