- #1

- 27

- 0

**I love geometry :)**

Hey all!

This is one problem I haven't been able to solve. I've had a class on theorems relative to circles and triangles but I still can't figure this one out.

3 identical, equilateral triangles are placed as seen on the attachment. Their sides measure 28cm, and the contact between them is "perfect". A circle could be drawn (see attachment) around the 3 triangles. What's the shortest possible diameter for the circle?

I absolutely have no idea. The center of the circle doesn't seem to be an important point here... and I can't think of an applicable theorem.

Thank you very much for looking! :)

Juef