Xref: utzoo comp.graphics:3366 sci.math:4650 Path: utzoo!yunexus!geac!syntron!jtsv16!uunet!husc6!bbn!mit-eddie!uw-beaver!tektronix!percival!parsely!agora!rickc From: rickc@agora.UUCP (Rick Coates) Newsgroups: comp.graphics,sci.math Subject: simple spherical algebra question Keywords: algebra Message-ID: <1187@agora.UUCP> Date: 12 Oct 88 22:01:51 GMT Article-I.D.: agora.1187 Organization: Advanced Solutions, Hillsboro, OR Lines: 15 Here is a straightforward question that I have not been able to find in my reference books: Given two points on a sphere, what is the equation of the line (great circle) between them? What is the midpoint? Many thanks in advance, Rick Coates tektronix!sequent!islabs!ateq!rick OR tektronix!reed!percival!agora!rickc