The shape of Stax is a simple curve called a hyperbolic cylinder, while Pringles are formed into a double-curve known as a hyperbolic paraboloid.
2.
:: Yes, and more specifically, a right circular cylinder ( as opposed to an oblique cylinder or an elliptical, parabolic, or hyperbolic cylinder ) . talk ) 01 : 29, 14 December 2008 ( UTC)