Re: [math-fun] Triangle 1/7th of generating ABC triangle

Gareth McCaughan wrote:

...Is there a better solution?

If you draw ABC properly within a tessellation of unit equilateral triangles, it is clear from the Pythagorean theorem that its edge length is sqrt[7]. See figure 5 of: http://www.georgehart.com/radiolaria/radiolaria.html George http://www.georgehart.com