Re: Mathematical name of curved triangle

["John S. Denker" <jsd@MONMOUTH.COM>]

Bernard Cleyet writes:
> I took a photo' of one in use  in the Kremlin

Fran Poodry wrote:
> Does anyone know if they are common in Russia?

I imagine they're fairly common just about everywhere.
  http://www.stairclimber.co.uk/

Have you ever tried to move a grand piano up a few
flights of stairs?  They're kinda heavy, and it's
considered poor form to drop them.  It helps to
have the right equipment.