Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/5/84; site terak.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!houxm!mtuxo!mtunh!vax135!cornell!uw-beaver!tektronix!hplabs!hao!noao!terak!doug From: doug@terak.UUCP (Doug Pardee) Newsgroups: net.puzzle,net.math Subject: Re: Polar Bear Problem Sequel **SPOILER** Message-ID: <821@terak.UUCP> Date: Fri, 25-Oct-85 00:24:49 EST Article-I.D.: terak.821 Posted: Fri Oct 25 00:24:49 1985 Date-Received: Tue, 29-Oct-85 01:07:10 EST References: <361@proper.UUCP> <606@ecsvax.UUCP> Distribution: net Organization: Calcomp Display Products Division, Scottsdale, AZ, USA Lines: 11 Xref: watmath net.puzzle:1089 net.math:2437 > > (1) From how many points on Earth (assuming it's spherical, etc.) > > can you make exactly these moves, i.e., walk 1 mile south, 1 > > mile west, 1 mile north, and be back where you started? > > > > (2) Describe all of them. > There is an infinite number of them, all close to the S pole. All but one: the North Pole is quite a distance from the South pole. -- Doug Pardee -- CalComp -- {calcom1,savax,seismo,decvax,ihnp4}!terak!doug