Rod,
Thanks for the information. They look as if they have been been
attractively produced but in the UK, Issue 1 is available at £1.99 while
Issue 3 onwards costs £8.99. So I shall not be subscribing £450 for a
complete set even if I had room on my shelves.
Best wishes,
Geoff
On 24 June 2017
Hi Geoff and Frank,
My book also shows this.
By The Way, the book is one of a series called the Mathematical World by
National Geographic. Where in Australia the 1st book. The Golden Ratio. The
mathematical language of beauty. Was AUD $2. $2 to get you to purchase the 1st
book. And then you may
Dear Geoff,
Many congratulations on your proof...
When I set the puzzle, I thought three things:
1. I am really setting this for Geoff to solve.
2. He will certainly solve it and will probably
be the first to publish.
3. His proof will either match mine or be more
elegant.
I was ri
Frank,
I think the most elegant proof that the diagonal to side ratio in a
pentagon equals phi is as shown in the attachment.
Geoff
On 23 June 2017 at 08:08, Frank King wrote:
> Dear All,
>
> Referring to the Golden Ratio and Sundials, Donald
> Snyder wrote:
>
> I see nothing obvious excep
