# geometry

posted by
**danielle**
.

h ttp://img64.imageshack.us/img64/574/plotformula.jpg

(please remove the space in the link above, because I could not post the full problem)

I think that I should use the following: a<b+c ,b<a+c ,c<a+b or the inequality of the means, but I have no idea how to do it.