Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/18/84; site bnrmtv.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!allegra!oliveb!3comvax!bnrmtv!perkins
From: perkins@bnrmtv.UUCP (Henry Perkins)
Newsgroups: net.puzzle,net.math
Subject: Re: Polar Bear Problem Sequel
Message-ID: <195@bnrmtv.UUCP>
Date: Mon, 21-Oct-85 20:18:24 EDT
Article-I.D.: bnrmtv.195
Posted: Mon Oct 21 20:18:24 1985
Date-Received: Wed, 23-Oct-85 04:14:27 EDT
References: <361@proper.UUCP>
Distribution: net
Organization: Bell Northern Research, Mtn. View, CA
Lines: 11
Xref: watmath net.puzzle:1061 net.math:2409

> The sequel:  (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.
> Judith Abrahms    {ucbvax,ihnp4}!dual!proper!judith

There are infinitely many.  The points are at (1) the north pole, and (2)
a circle of points 1 mile north of the circle with circumference 1 mile
centered around the south pole.

{hplabs,amdahl,3comvax}!bnrmtv!perkins          --Henry Perkins