A hyperboloid of two sheets

   This figure shows a finite portion of a hyperboloid of two sheets. The hyperboloid of two sheets is a non-ruled quadric surface, i.e. a surface of degree 2 that does not contain an infinite family of lines. In fact, there are no lines on this surface.


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Prof. Joel Roberts
School of Mathematics
University of Minnesota
Minneapolis, MN 55455

Office: 351 Vincent Hall
Phone: (612) 625-1076
Dept. FAX: (612) 626-2017
e-mail: roberts@math.umn.edu