Square of Thales

[Lurker]

I was talking to a friend ( who incidentally has an engineering degree) about erecting a workshop he has ordered.
You need a square of Thales says I.
Never heard of it says he
Difficult to explain in a few words so we googled.
The AI thingy on the top refers almost immediately to Steve’s u tube and most of the following references can be traced back to the same source.
Friend is impressed saying , it’s obvious when you think about it, but I’ve never come across that before, how did you find it?
He’s a friend of mine, I say nonchalantly

 

[Mike G]

He’s a friend of mine, I say nonchalantly

But he's been dead for two and a half thousand years.

 

[Lurker]

But he's been dead for two and a half thousand years.

Not THAT one I meant the u tube bloke

 

[Steve Maskery]

Thank you, Lurker. It's been a crap few days and that made me laugh.
And some days I do feel as if I've been dead for two-and-a-half-thousand years...
S

 

[Steve Maskery]

And just for the Bots...